phishman3579 · cejikeme · Nov 25, 2022 · Nov 25, 2022 · Dec 4, 2022 · Dec 4, 2022
diff --git a/.DS_Store b/.DS_Store
diff --git a/.project b/.project
@@ -14,4 +14,15 @@
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 		<nature>org.eclipse.jdt.core.javanature</nature>
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+	<filteredResources>
+		<filter>
+			<id>1669304224981</id>
+			<name></name>
+			<type>30</type>
+			<matcher>
+				<id>org.eclipse.core.resources.regexFilterMatcher</id>
+				<arguments>node_modules|\.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
+			</matcher>
+		</filter>
+	</filteredResources>
 </projectDescription>
diff --git a/jacoco.exec b/jacoco.exec
diff --git a/src/.DS_Store b/src/.DS_Store
diff --git a/src/com/.DS_Store b/src/com/.DS_Store
diff --git a/src/com/jwetherell/.DS_Store b/src/com/jwetherell/.DS_Store
diff --git a/src/com/jwetherell/algorithms/.DS_Store b/src/com/jwetherell/algorithms/.DS_Store
diff --git a/src/com/jwetherell/algorithms/data_structures/AVLTree$1.class b/src/com/jwetherell/algorithms/data_structures/AVLTree$1.class
diff --git a/src/com/jwetherell/algorithms/data_structures/AVLTree$AVLNode.class b/src/com/jwetherell/algorithms/data_structures/AVLTree$AVLNode.class
diff --git a/src/com/jwetherell/algorithms/data_structures/AVLTree$AVLTreePrinter.class b/src/com/jwetherell/algorithms/data_structures/AVLTree$AVLTreePrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/AVLTree$Balance.class b/src/com/jwetherell/algorithms/data_structures/AVLTree$Balance.class
diff --git a/src/com/jwetherell/algorithms/data_structures/AVLTree.class b/src/com/jwetherell/algorithms/data_structures/AVLTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BTree$JavaCompatibleBTree$BTreeIterator.class b/src/com/jwetherell/algorithms/data_structures/BTree$JavaCompatibleBTree$BTreeIterator.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BTree$JavaCompatibleBTree.class b/src/com/jwetherell/algorithms/data_structures/BTree$JavaCompatibleBTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BTree$Node$1.class b/src/com/jwetherell/algorithms/data_structures/BTree$Node$1.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BTree$Node.class b/src/com/jwetherell/algorithms/data_structures/BTree$Node.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BTree$TreePrinter.class b/src/com/jwetherell/algorithms/data_structures/BTree$TreePrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BTree.class b/src/com/jwetherell/algorithms/data_structures/BTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BinaryHeap$BinaryHeapArray$HeapPrinter.class b/src/com/jwetherell/algorithms/data_structures/BinaryHeap$BinaryHeapArray$HeapPrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BinaryHeap$BinaryHeapArray.class b/src/com/jwetherell/algorithms/data_structures/BinaryHeap$BinaryHeapArray.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BinaryHeap$BinaryHeapTree$HeapPrinter.class b/src/com/jwetherell/algorithms/data_structures/BinaryHeap$BinaryHeapTree$HeapPrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BinaryHeap$BinaryHeapTree$Node.class b/src/com/jwetherell/algorithms/data_structures/BinaryHeap$BinaryHeapTree$Node.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BinaryHeap$BinaryHeapTree.class b/src/com/jwetherell/algorithms/data_structures/BinaryHeap$BinaryHeapTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BinaryHeap$HeapType.class b/src/com/jwetherell/algorithms/data_structures/BinaryHeap$HeapType.class
diff --git a/...ms/data_structures/BinaryHeap$JavaCompatibleBinaryHeapArray$BinaryHeapArrayIterator.class b/...ms/data_structures/BinaryHeap$JavaCompatibleBinaryHeapArray$BinaryHeapArrayIterator.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BinaryHeap$JavaCompatibleBinaryHeapArray.class b/src/com/jwetherell/algorithms/data_structures/BinaryHeap$JavaCompatibleBinaryHeapArray.class
diff --git a/...thms/data_structures/BinaryHeap$JavaCompatibleBinaryHeapTree$BinaryHeapTreeIterator.class b/...thms/data_structures/BinaryHeap$JavaCompatibleBinaryHeapTree$BinaryHeapTreeIterator.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BinaryHeap$JavaCompatibleBinaryHeapTree.class b/src/com/jwetherell/algorithms/data_structures/BinaryHeap$JavaCompatibleBinaryHeapTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BinaryHeap$Type.class b/src/com/jwetherell/algorithms/data_structures/BinaryHeap$Type.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BinaryHeap.class b/src/com/jwetherell/algorithms/data_structures/BinaryHeap.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BinarySearchTree$1.class b/src/com/jwetherell/algorithms/data_structures/BinarySearchTree$1.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BinarySearchTree$DepthFirstSearchOrder.class b/src/com/jwetherell/algorithms/data_structures/BinarySearchTree$DepthFirstSearchOrder.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BinarySearchTree$INodeCreator.class b/src/com/jwetherell/algorithms/data_structures/BinarySearchTree$INodeCreator.class
diff --git a/...structures/BinarySearchTree$JavaCompatibleBinarySearchTree$BinarySearchTreeIterator.class b/...structures/BinarySearchTree$JavaCompatibleBinarySearchTree$BinarySearchTreeIterator.class
diff --git a/...etherell/algorithms/data_structures/BinarySearchTree$JavaCompatibleBinarySearchTree.class b/...etherell/algorithms/data_structures/BinarySearchTree$JavaCompatibleBinarySearchTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BinarySearchTree$Node.class b/src/com/jwetherell/algorithms/data_structures/BinarySearchTree$Node.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BinarySearchTree$TreePrinter.class b/src/com/jwetherell/algorithms/data_structures/BinarySearchTree$TreePrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/BinarySearchTree.class b/src/com/jwetherell/algorithms/data_structures/BinarySearchTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/CompactSuffixTrie.class b/src/com/jwetherell/algorithms/data_structures/CompactSuffixTrie.class
diff --git a/src/com/jwetherell/algorithms/data_structures/DisjointSet$Item.class b/src/com/jwetherell/algorithms/data_structures/DisjointSet$Item.class
diff --git a/src/com/jwetherell/algorithms/data_structures/DisjointSet.class b/src/com/jwetherell/algorithms/data_structures/DisjointSet.class
diff --git a/src/com/jwetherell/algorithms/data_structures/FenwickTree$Data$RangeSumData.class b/src/com/jwetherell/algorithms/data_structures/FenwickTree$Data$RangeSumData.class
diff --git a/src/com/jwetherell/algorithms/data_structures/FenwickTree$Data.class b/src/com/jwetherell/algorithms/data_structures/FenwickTree$Data.class
diff --git a/src/com/jwetherell/algorithms/data_structures/FenwickTree$FenwickTreePrinter.class b/src/com/jwetherell/algorithms/data_structures/FenwickTree$FenwickTreePrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/FenwickTree.class b/src/com/jwetherell/algorithms/data_structures/FenwickTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Graph$CostPathPair.class b/src/com/jwetherell/algorithms/data_structures/Graph$CostPathPair.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Graph$CostVertexPair.class b/src/com/jwetherell/algorithms/data_structures/Graph$CostVertexPair.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Graph$Edge.class b/src/com/jwetherell/algorithms/data_structures/Graph$Edge.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Graph$TYPE.class b/src/com/jwetherell/algorithms/data_structures/Graph$TYPE.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Graph$Vertex.class b/src/com/jwetherell/algorithms/data_structures/Graph$Vertex.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Graph.class b/src/com/jwetherell/algorithms/data_structures/Graph.class
diff --git a/src/com/jwetherell/algorithms/data_structures/HashArrayMappedTrie$ArrayNode.class b/src/com/jwetherell/algorithms/data_structures/HashArrayMappedTrie$ArrayNode.class
diff --git a/...herell/algorithms/data_structures/HashArrayMappedTrie$JavaCompatibleIteratorWrapper.class b/...herell/algorithms/data_structures/HashArrayMappedTrie$JavaCompatibleIteratorWrapper.class
diff --git a/src/com/jwetherell/algorithms/data_structures/HashArrayMappedTrie$JavaCompatibleMap$1.class b/src/com/jwetherell/algorithms/data_structures/HashArrayMappedTrie$JavaCompatibleMap$1.class
diff --git a/src/com/jwetherell/algorithms/data_structures/HashArrayMappedTrie$JavaCompatibleMap.class b/src/com/jwetherell/algorithms/data_structures/HashArrayMappedTrie$JavaCompatibleMap.class
diff --git a/...om/jwetherell/algorithms/data_structures/HashArrayMappedTrie$JavaCompatibleMapEntry.class b/...om/jwetherell/algorithms/data_structures/HashArrayMappedTrie$JavaCompatibleMapEntry.class
diff --git a/src/com/jwetherell/algorithms/data_structures/HashArrayMappedTrie$KeyValueNode.class b/src/com/jwetherell/algorithms/data_structures/HashArrayMappedTrie$KeyValueNode.class
diff --git a/src/com/jwetherell/algorithms/data_structures/HashArrayMappedTrie$Node.class b/src/com/jwetherell/algorithms/data_structures/HashArrayMappedTrie$Node.class
diff --git a/src/com/jwetherell/algorithms/data_structures/HashArrayMappedTrie$TreePrinter.class b/src/com/jwetherell/algorithms/data_structures/HashArrayMappedTrie$TreePrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/HashArrayMappedTrie.class b/src/com/jwetherell/algorithms/data_structures/HashArrayMappedTrie.class
diff --git a/...etherell/algorithms/data_structures/HashMap$ChainingHashMap$JavaCompatibleHashMap$1.class b/...etherell/algorithms/data_structures/HashMap$ChainingHashMap$JavaCompatibleHashMap$1.class
diff --git a/...jwetherell/algorithms/data_structures/HashMap$ChainingHashMap$JavaCompatibleHashMap.class b/...jwetherell/algorithms/data_structures/HashMap$ChainingHashMap$JavaCompatibleHashMap.class
diff --git a/src/com/jwetherell/algorithms/data_structures/HashMap$ChainingHashMap.class b/src/com/jwetherell/algorithms/data_structures/HashMap$ChainingHashMap.class
diff --git a/src/com/jwetherell/algorithms/data_structures/HashMap$JavaCompatibleIteratorWrapper.class b/src/com/jwetherell/algorithms/data_structures/HashMap$JavaCompatibleIteratorWrapper.class
diff --git a/src/com/jwetherell/algorithms/data_structures/HashMap$JavaCompatibleMapEntry.class b/src/com/jwetherell/algorithms/data_structures/HashMap$JavaCompatibleMapEntry.class
diff --git a/src/com/jwetherell/algorithms/data_structures/HashMap$Pair.class b/src/com/jwetherell/algorithms/data_structures/HashMap$Pair.class
diff --git a/...wetherell/algorithms/data_structures/HashMap$ProbingHashMap$JavaCompatibleHashMap$1.class b/...wetherell/algorithms/data_structures/HashMap$ProbingHashMap$JavaCompatibleHashMap$1.class
diff --git a/.../jwetherell/algorithms/data_structures/HashMap$ProbingHashMap$JavaCompatibleHashMap.class b/.../jwetherell/algorithms/data_structures/HashMap$ProbingHashMap$JavaCompatibleHashMap.class
diff --git a/src/com/jwetherell/algorithms/data_structures/HashMap$ProbingHashMap.class b/src/com/jwetherell/algorithms/data_structures/HashMap$ProbingHashMap.class
diff --git a/src/com/jwetherell/algorithms/data_structures/HashMap$Type.class b/src/com/jwetherell/algorithms/data_structures/HashMap$Type.class
diff --git a/src/com/jwetherell/algorithms/data_structures/HashMap.class b/src/com/jwetherell/algorithms/data_structures/HashMap.class
diff --git a/src/com/jwetherell/algorithms/data_structures/ImplicitKeyTreap$JavaCompatibleArrayList.class b/src/com/jwetherell/algorithms/data_structures/ImplicitKeyTreap$JavaCompatibleArrayList.class
diff --git a/src/com/jwetherell/algorithms/data_structures/ImplicitKeyTreap$Node.class b/src/com/jwetherell/algorithms/data_structures/ImplicitKeyTreap$Node.class
diff --git a/src/com/jwetherell/algorithms/data_structures/ImplicitKeyTreap$Pair.class b/src/com/jwetherell/algorithms/data_structures/ImplicitKeyTreap$Pair.class
diff --git a/src/com/jwetherell/algorithms/data_structures/ImplicitKeyTreap$TreePrinter.class b/src/com/jwetherell/algorithms/data_structures/ImplicitKeyTreap$TreePrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/ImplicitKeyTreap.class b/src/com/jwetherell/algorithms/data_structures/ImplicitKeyTreap.class
diff --git a/src/com/jwetherell/algorithms/data_structures/IntervalSum.class b/src/com/jwetherell/algorithms/data_structures/IntervalSum.class
diff --git a/src/com/jwetherell/algorithms/data_structures/IntervalTree$1.class b/src/com/jwetherell/algorithms/data_structures/IntervalTree$1.class
diff --git a/src/com/jwetherell/algorithms/data_structures/IntervalTree$2.class b/src/com/jwetherell/algorithms/data_structures/IntervalTree$2.class
diff --git a/src/com/jwetherell/algorithms/data_structures/IntervalTree$Interval.class b/src/com/jwetherell/algorithms/data_structures/IntervalTree$Interval.class
diff --git a/src/com/jwetherell/algorithms/data_structures/IntervalTree$IntervalData.class b/src/com/jwetherell/algorithms/data_structures/IntervalTree$IntervalData.class
diff --git a/src/com/jwetherell/algorithms/data_structures/IntervalTree$IntervalTreePrinter.class b/src/com/jwetherell/algorithms/data_structures/IntervalTree$IntervalTreePrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/IntervalTree.class b/src/com/jwetherell/algorithms/data_structures/IntervalTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/KdTree$1.class b/src/com/jwetherell/algorithms/data_structures/KdTree$1.class
diff --git a/src/com/jwetherell/algorithms/data_structures/KdTree$2.class b/src/com/jwetherell/algorithms/data_structures/KdTree$2.class
diff --git a/src/com/jwetherell/algorithms/data_structures/KdTree$3.class b/src/com/jwetherell/algorithms/data_structures/KdTree$3.class
diff --git a/src/com/jwetherell/algorithms/data_structures/KdTree$EuclideanComparator.class b/src/com/jwetherell/algorithms/data_structures/KdTree$EuclideanComparator.class
diff --git a/src/com/jwetherell/algorithms/data_structures/KdTree$KdNode.class b/src/com/jwetherell/algorithms/data_structures/KdTree$KdNode.class
diff --git a/src/com/jwetherell/algorithms/data_structures/KdTree$TreePrinter.class b/src/com/jwetherell/algorithms/data_structures/KdTree$TreePrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/KdTree$XYZPoint.class b/src/com/jwetherell/algorithms/data_structures/KdTree$XYZPoint.class
diff --git a/src/com/jwetherell/algorithms/data_structures/KdTree.class b/src/com/jwetherell/algorithms/data_structures/KdTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/LCPArray.class b/src/com/jwetherell/algorithms/data_structures/LCPArray.class
diff --git a/src/com/jwetherell/algorithms/data_structures/List$ArrayList.class b/src/com/jwetherell/algorithms/data_structures/List$ArrayList.class
diff --git a/src/com/jwetherell/algorithms/data_structures/List$DoublyLinkedList$Node.class b/src/com/jwetherell/algorithms/data_structures/List$DoublyLinkedList$Node.class
diff --git a/src/com/jwetherell/algorithms/data_structures/List$DoublyLinkedList.class b/src/com/jwetherell/algorithms/data_structures/List$DoublyLinkedList.class
diff --git a/src/com/jwetherell/algorithms/data_structures/List$JavaCompatibleArrayList.class b/src/com/jwetherell/algorithms/data_structures/List$JavaCompatibleArrayList.class
diff --git a/...ms/data_structures/List$JavaCompatibleDoublyLinkedList$DoublyLinkedListListIterator.class b/...ms/data_structures/List$JavaCompatibleDoublyLinkedList$DoublyLinkedListListIterator.class
diff --git a/src/com/jwetherell/algorithms/data_structures/List$JavaCompatibleDoublyLinkedList.class b/src/com/jwetherell/algorithms/data_structures/List$JavaCompatibleDoublyLinkedList.class
diff --git a/...ms/data_structures/List$JavaCompatibleSinglyLinkedList$SinglyLinkedListListIterator.class b/...ms/data_structures/List$JavaCompatibleSinglyLinkedList$SinglyLinkedListListIterator.class
diff --git a/src/com/jwetherell/algorithms/data_structures/List$JavaCompatibleSinglyLinkedList.class b/src/com/jwetherell/algorithms/data_structures/List$JavaCompatibleSinglyLinkedList.class
diff --git a/src/com/jwetherell/algorithms/data_structures/List$SinglyLinkedList$Node.class b/src/com/jwetherell/algorithms/data_structures/List$SinglyLinkedList$Node.class
diff --git a/src/com/jwetherell/algorithms/data_structures/List$SinglyLinkedList.class b/src/com/jwetherell/algorithms/data_structures/List$SinglyLinkedList.class
diff --git a/src/com/jwetherell/algorithms/data_structures/List.class b/src/com/jwetherell/algorithms/data_structures/List.class
diff --git a/...therell/algorithms/data_structures/LowestCommonAncestor$NodesNotInSameTreeException.class b/...therell/algorithms/data_structures/LowestCommonAncestor$NodesNotInSameTreeException.class
diff --git a/src/com/jwetherell/algorithms/data_structures/LowestCommonAncestor$TreeNode.class b/src/com/jwetherell/algorithms/data_structures/LowestCommonAncestor$TreeNode.class
diff --git a/src/com/jwetherell/algorithms/data_structures/LowestCommonAncestor.class b/src/com/jwetherell/algorithms/data_structures/LowestCommonAncestor.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Matrix$1.class b/src/com/jwetherell/algorithms/data_structures/Matrix$1.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Matrix.class b/src/com/jwetherell/algorithms/data_structures/Matrix.class
diff --git a/src/com/jwetherell/algorithms/data_structures/PatriciaTrie$1.class b/src/com/jwetherell/algorithms/data_structures/PatriciaTrie$1.class
diff --git a/src/com/jwetherell/algorithms/data_structures/PatriciaTrie$INodeCreator.class b/src/com/jwetherell/algorithms/data_structures/PatriciaTrie$INodeCreator.class
diff --git a/...rithms/data_structures/PatriciaTrie$JavaCompatiblePatriciaTrie$PatriciaTrieIterator.class b/...rithms/data_structures/PatriciaTrie$JavaCompatiblePatriciaTrie$PatriciaTrieIterator.class
diff --git a/src/com/jwetherell/algorithms/data_structures/PatriciaTrie$JavaCompatiblePatriciaTrie.class b/src/com/jwetherell/algorithms/data_structures/PatriciaTrie$JavaCompatiblePatriciaTrie.class
diff --git a/src/com/jwetherell/algorithms/data_structures/PatriciaTrie$Node.class b/src/com/jwetherell/algorithms/data_structures/PatriciaTrie$Node.class
diff --git a/src/com/jwetherell/algorithms/data_structures/PatriciaTrie$PatriciaTriePrinter.class b/src/com/jwetherell/algorithms/data_structures/PatriciaTrie$PatriciaTriePrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/PatriciaTrie.class b/src/com/jwetherell/algorithms/data_structures/PatriciaTrie.class
diff --git a/src/com/jwetherell/algorithms/data_structures/QuadTree$1.class b/src/com/jwetherell/algorithms/data_structures/QuadTree$1.class
diff --git a/src/com/jwetherell/algorithms/data_structures/QuadTree$2.class b/src/com/jwetherell/algorithms/data_structures/QuadTree$2.class
diff --git a/src/com/jwetherell/algorithms/data_structures/QuadTree$AxisAlignedBoundingBox.class b/src/com/jwetherell/algorithms/data_structures/QuadTree$AxisAlignedBoundingBox.class
diff --git a/src/com/jwetherell/algorithms/data_structures/QuadTree$MxCifQuadTree$MxCifQuadNode.class b/src/com/jwetherell/algorithms/data_structures/QuadTree$MxCifQuadTree$MxCifQuadNode.class
diff --git a/src/com/jwetherell/algorithms/data_structures/QuadTree$MxCifQuadTree.class b/src/com/jwetherell/algorithms/data_structures/QuadTree$MxCifQuadTree.class
diff --git a/...therell/algorithms/data_structures/QuadTree$PointRegionQuadTree$PointRegionQuadNode.class b/...therell/algorithms/data_structures/QuadTree$PointRegionQuadTree$PointRegionQuadNode.class
diff --git a/src/com/jwetherell/algorithms/data_structures/QuadTree$PointRegionQuadTree.class b/src/com/jwetherell/algorithms/data_structures/QuadTree$PointRegionQuadTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/QuadTree$QuadNode.class b/src/com/jwetherell/algorithms/data_structures/QuadTree$QuadNode.class
diff --git a/src/com/jwetherell/algorithms/data_structures/QuadTree$TreePrinter.class b/src/com/jwetherell/algorithms/data_structures/QuadTree$TreePrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/QuadTree$XYPoint.class b/src/com/jwetherell/algorithms/data_structures/QuadTree$XYPoint.class
diff --git a/src/com/jwetherell/algorithms/data_structures/QuadTree.class b/src/com/jwetherell/algorithms/data_structures/QuadTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Queue$ArrayQueue.class b/src/com/jwetherell/algorithms/data_structures/Queue$ArrayQueue.class
diff --git a/...herell/algorithms/data_structures/Queue$JavaCompatibleArrayQueue$ArrayQueueIterator.class b/...herell/algorithms/data_structures/Queue$JavaCompatibleArrayQueue$ArrayQueueIterator.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Queue$JavaCompatibleArrayQueue.class b/src/com/jwetherell/algorithms/data_structures/Queue$JavaCompatibleArrayQueue.class
diff --git a/...rell/algorithms/data_structures/Queue$JavaCompatibleLinkedQueue$LinkedQueueIterator.class b/...rell/algorithms/data_structures/Queue$JavaCompatibleLinkedQueue$LinkedQueueIterator.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Queue$JavaCompatibleLinkedQueue.class b/src/com/jwetherell/algorithms/data_structures/Queue$JavaCompatibleLinkedQueue.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Queue$LinkedQueue$Node.class b/src/com/jwetherell/algorithms/data_structures/Queue$LinkedQueue$Node.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Queue$LinkedQueue.class b/src/com/jwetherell/algorithms/data_structures/Queue$LinkedQueue.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Queue.class b/src/com/jwetherell/algorithms/data_structures/Queue.class
diff --git a/src/com/jwetherell/algorithms/data_structures/RadixTrie$JavaCompatibleIteratorWrapper.class b/src/com/jwetherell/algorithms/data_structures/RadixTrie$JavaCompatibleIteratorWrapper.class
diff --git a/src/com/jwetherell/algorithms/data_structures/RadixTrie$JavaCompatibleMapEntry.class b/src/com/jwetherell/algorithms/data_structures/RadixTrie$JavaCompatibleMapEntry.class
diff --git a/src/com/jwetherell/algorithms/data_structures/RadixTrie$JavaCompatibleRadixTrieMap$1.class b/src/com/jwetherell/algorithms/data_structures/RadixTrie$JavaCompatibleRadixTrieMap$1.class
diff --git a/src/com/jwetherell/algorithms/data_structures/RadixTrie$JavaCompatibleRadixTrieMap.class b/src/com/jwetherell/algorithms/data_structures/RadixTrie$JavaCompatibleRadixTrieMap.class
diff --git a/src/com/jwetherell/algorithms/data_structures/RadixTrie$RadixNode.class b/src/com/jwetherell/algorithms/data_structures/RadixTrie$RadixNode.class
diff --git a/src/com/jwetherell/algorithms/data_structures/RadixTrie$RadixTreePrinter.class b/src/com/jwetherell/algorithms/data_structures/RadixTrie$RadixTreePrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/RadixTrie.class b/src/com/jwetherell/algorithms/data_structures/RadixTrie.class
diff --git a/src/com/jwetherell/algorithms/data_structures/RedBlackTree$1.class b/src/com/jwetherell/algorithms/data_structures/RedBlackTree$1.class
diff --git a/...rithms/data_structures/RedBlackTree$JavaCompatibleRedBlackTree$RedBlackTreeIterator.class b/...rithms/data_structures/RedBlackTree$JavaCompatibleRedBlackTree$RedBlackTreeIterator.class
diff --git a/src/com/jwetherell/algorithms/data_structures/RedBlackTree$JavaCompatibleRedBlackTree.class b/src/com/jwetherell/algorithms/data_structures/RedBlackTree$JavaCompatibleRedBlackTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/RedBlackTree$RedBlackNode.class b/src/com/jwetherell/algorithms/data_structures/RedBlackTree$RedBlackNode.class
diff --git a/src/com/jwetherell/algorithms/data_structures/RedBlackTree$RedBlackTreePrinter.class b/src/com/jwetherell/algorithms/data_structures/RedBlackTree$RedBlackTreePrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/RedBlackTree.class b/src/com/jwetherell/algorithms/data_structures/RedBlackTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SegmentTree$Data$IntervalData.class b/src/com/jwetherell/algorithms/data_structures/SegmentTree$Data$IntervalData.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SegmentTree$Data$QuadrantData.class b/src/com/jwetherell/algorithms/data_structures/SegmentTree$Data$QuadrantData.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SegmentTree$Data$RangeMaximumData.class b/src/com/jwetherell/algorithms/data_structures/SegmentTree$Data$RangeMaximumData.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SegmentTree$Data$RangeMinimumData.class b/src/com/jwetherell/algorithms/data_structures/SegmentTree$Data$RangeMinimumData.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SegmentTree$Data$RangeSumData.class b/src/com/jwetherell/algorithms/data_structures/SegmentTree$Data$RangeSumData.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SegmentTree$Data.class b/src/com/jwetherell/algorithms/data_structures/SegmentTree$Data.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SegmentTree$DynamicSegmentTree$1.class b/src/com/jwetherell/algorithms/data_structures/SegmentTree$DynamicSegmentTree$1.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SegmentTree$DynamicSegmentTree$2.class b/src/com/jwetherell/algorithms/data_structures/SegmentTree$DynamicSegmentTree$2.class
diff --git a/...herell/algorithms/data_structures/SegmentTree$DynamicSegmentTree$OverlappingSegment.class b/...herell/algorithms/data_structures/SegmentTree$DynamicSegmentTree$OverlappingSegment.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SegmentTree$DynamicSegmentTree.class b/src/com/jwetherell/algorithms/data_structures/SegmentTree$DynamicSegmentTree.class
diff --git a/...herell/algorithms/data_structures/SegmentTree$FlatSegmentTree$NonOverlappingSegment.class b/...herell/algorithms/data_structures/SegmentTree$FlatSegmentTree$NonOverlappingSegment.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SegmentTree$FlatSegmentTree.class b/src/com/jwetherell/algorithms/data_structures/SegmentTree$FlatSegmentTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SegmentTree$Segment.class b/src/com/jwetherell/algorithms/data_structures/SegmentTree$Segment.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SegmentTree$SegmentTreePrinter.class b/src/com/jwetherell/algorithms/data_structures/SegmentTree$SegmentTreePrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SegmentTree.class b/src/com/jwetherell/algorithms/data_structures/SegmentTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SkipList$INodeCreator.class b/src/com/jwetherell/algorithms/data_structures/SkipList$INodeCreator.class
diff --git a/...ell/algorithms/data_structures/SkipList$JavaCompatibleSkipList$SkipListListIterator.class b/...ell/algorithms/data_structures/SkipList$JavaCompatibleSkipList$SkipListListIterator.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SkipList$JavaCompatibleSkipList.class b/src/com/jwetherell/algorithms/data_structures/SkipList$JavaCompatibleSkipList.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SkipList$Node.class b/src/com/jwetherell/algorithms/data_structures/SkipList$Node.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SkipList$NodeLevelPair.class b/src/com/jwetherell/algorithms/data_structures/SkipList$NodeLevelPair.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SkipList.class b/src/com/jwetherell/algorithms/data_structures/SkipList.class
diff --git a/...com/jwetherell/algorithms/data_structures/SkipListMap$JavaCompatibleIteratorWrapper.class b/...com/jwetherell/algorithms/data_structures/SkipListMap$JavaCompatibleIteratorWrapper.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SkipListMap$JavaCompatibleMapEntry.class b/src/com/jwetherell/algorithms/data_structures/SkipListMap$JavaCompatibleMapEntry.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SkipListMap$JavaCompatibleTreeMap$1.class b/src/com/jwetherell/algorithms/data_structures/SkipListMap$JavaCompatibleTreeMap$1.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SkipListMap$JavaCompatibleTreeMap.class b/src/com/jwetherell/algorithms/data_structures/SkipListMap$JavaCompatibleTreeMap.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SkipListMap$SkipListMapNode.class b/src/com/jwetherell/algorithms/data_structures/SkipListMap$SkipListMapNode.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SkipListMap.class b/src/com/jwetherell/algorithms/data_structures/SkipListMap.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SplayTree.class b/src/com/jwetherell/algorithms/data_structures/SplayTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Stack$ArrayStack.class b/src/com/jwetherell/algorithms/data_structures/Stack$ArrayStack.class
diff --git a/...herell/algorithms/data_structures/Stack$JavaCompatibleArrayStack$ArrayStackIterator.class b/...herell/algorithms/data_structures/Stack$JavaCompatibleArrayStack$ArrayStackIterator.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Stack$JavaCompatibleArrayStack.class b/src/com/jwetherell/algorithms/data_structures/Stack$JavaCompatibleArrayStack.class
diff --git a/...rell/algorithms/data_structures/Stack$JavaCompatibleLinkedStack$LinkedStackIterator.class b/...rell/algorithms/data_structures/Stack$JavaCompatibleLinkedStack$LinkedStackIterator.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Stack$JavaCompatibleLinkedStack.class b/src/com/jwetherell/algorithms/data_structures/Stack$JavaCompatibleLinkedStack.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Stack$LinkedStack$Node.class b/src/com/jwetherell/algorithms/data_structures/Stack$LinkedStack$Node.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Stack$LinkedStack.class b/src/com/jwetherell/algorithms/data_structures/Stack$LinkedStack.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Stack.class b/src/com/jwetherell/algorithms/data_structures/Stack.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SuffixArray$1.class b/src/com/jwetherell/algorithms/data_structures/SuffixArray$1.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SuffixArray$KMRsWithIndex.class b/src/com/jwetherell/algorithms/data_structures/SuffixArray$KMRsWithIndex.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SuffixArray.class b/src/com/jwetherell/algorithms/data_structures/SuffixArray.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SuffixTree$Edge.class b/src/com/jwetherell/algorithms/data_structures/SuffixTree$Edge.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SuffixTree$Link.class b/src/com/jwetherell/algorithms/data_structures/SuffixTree$Link.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SuffixTree$TreePrinter.class b/src/com/jwetherell/algorithms/data_structures/SuffixTree$TreePrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SuffixTree.class b/src/com/jwetherell/algorithms/data_structures/SuffixTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/SuffixTrie.class b/src/com/jwetherell/algorithms/data_structures/SuffixTrie.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TernarySearchTree$1.class b/src/com/jwetherell/algorithms/data_structures/TernarySearchTree$1.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TernarySearchTree$INodeCreator.class b/src/com/jwetherell/algorithms/data_structures/TernarySearchTree$INodeCreator.class
diff --git a/...herell/algorithms/data_structures/TernarySearchTree$JavaCompatibleTree$TreeIterator.class b/...herell/algorithms/data_structures/TernarySearchTree$JavaCompatibleTree$TreeIterator.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TernarySearchTree$JavaCompatibleTree.class b/src/com/jwetherell/algorithms/data_structures/TernarySearchTree$JavaCompatibleTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TernarySearchTree$Node.class b/src/com/jwetherell/algorithms/data_structures/TernarySearchTree$Node.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TernarySearchTree$TreePrinter.class b/src/com/jwetherell/algorithms/data_structures/TernarySearchTree$TreePrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TernarySearchTree.class b/src/com/jwetherell/algorithms/data_structures/TernarySearchTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Treap$1.class b/src/com/jwetherell/algorithms/data_structures/Treap$1.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Treap$TreapNode.class b/src/com/jwetherell/algorithms/data_structures/Treap$TreapNode.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Treap$TreapPrinter.class b/src/com/jwetherell/algorithms/data_structures/Treap$TreapPrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Treap.class b/src/com/jwetherell/algorithms/data_structures/Treap.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TreeMap$1.class b/src/com/jwetherell/algorithms/data_structures/TreeMap$1.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TreeMap$JavaCompatibleIteratorWrapper.class b/src/com/jwetherell/algorithms/data_structures/TreeMap$JavaCompatibleIteratorWrapper.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TreeMap$JavaCompatibleMapEntry.class b/src/com/jwetherell/algorithms/data_structures/TreeMap$JavaCompatibleMapEntry.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TreeMap$JavaCompatibleTreeMap$1.class b/src/com/jwetherell/algorithms/data_structures/TreeMap$JavaCompatibleTreeMap$1.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TreeMap$JavaCompatibleTreeMap.class b/src/com/jwetherell/algorithms/data_structures/TreeMap$JavaCompatibleTreeMap.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TreeMap$TreeMapNode.class b/src/com/jwetherell/algorithms/data_structures/TreeMap$TreeMapNode.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TreeMap$TreeMapPrinter.class b/src/com/jwetherell/algorithms/data_structures/TreeMap$TreeMapPrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TreeMap.class b/src/com/jwetherell/algorithms/data_structures/TreeMap.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Trie$1.class b/src/com/jwetherell/algorithms/data_structures/Trie$1.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Trie$INodeCreator.class b/src/com/jwetherell/algorithms/data_structures/Trie$INodeCreator.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Trie$JavaCompatibleTrie$TrieIterator.class b/src/com/jwetherell/algorithms/data_structures/Trie$JavaCompatibleTrie$TrieIterator.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Trie$JavaCompatibleTrie.class b/src/com/jwetherell/algorithms/data_structures/Trie$JavaCompatibleTrie.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Trie$Node.class b/src/com/jwetherell/algorithms/data_structures/Trie$Node.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Trie$TriePrinter.class b/src/com/jwetherell/algorithms/data_structures/Trie$TriePrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/Trie.class b/src/com/jwetherell/algorithms/data_structures/Trie.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TrieMap$JavaCompatibleIteratorWrapper.class b/src/com/jwetherell/algorithms/data_structures/TrieMap$JavaCompatibleIteratorWrapper.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TrieMap$JavaCompatibleMapEntry.class b/src/com/jwetherell/algorithms/data_structures/TrieMap$JavaCompatibleMapEntry.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TrieMap$JavaCompatibleTrieMap$1.class b/src/com/jwetherell/algorithms/data_structures/TrieMap$JavaCompatibleTrieMap$1.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TrieMap$JavaCompatibleTrieMap.class b/src/com/jwetherell/algorithms/data_structures/TrieMap$JavaCompatibleTrieMap.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TrieMap$TrieMapNode.class b/src/com/jwetherell/algorithms/data_structures/TrieMap$TrieMapNode.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TrieMap$TrieMapPrinter.class b/src/com/jwetherell/algorithms/data_structures/TrieMap$TrieMapPrinter.class
diff --git a/src/com/jwetherell/algorithms/data_structures/TrieMap.class b/src/com/jwetherell/algorithms/data_structures/TrieMap.class
diff --git a/src/com/jwetherell/algorithms/data_structures/interfaces/IHeap.class b/src/com/jwetherell/algorithms/data_structures/interfaces/IHeap.class
diff --git a/src/com/jwetherell/algorithms/data_structures/interfaces/IList.class b/src/com/jwetherell/algorithms/data_structures/interfaces/IList.class
diff --git a/src/com/jwetherell/algorithms/data_structures/interfaces/IMap.class b/src/com/jwetherell/algorithms/data_structures/interfaces/IMap.class
diff --git a/src/com/jwetherell/algorithms/data_structures/interfaces/IQueue.class b/src/com/jwetherell/algorithms/data_structures/interfaces/IQueue.class
diff --git a/src/com/jwetherell/algorithms/data_structures/interfaces/ISet.class b/src/com/jwetherell/algorithms/data_structures/interfaces/ISet.class
diff --git a/src/com/jwetherell/algorithms/data_structures/interfaces/IStack.class b/src/com/jwetherell/algorithms/data_structures/interfaces/IStack.class
diff --git a/src/com/jwetherell/algorithms/data_structures/interfaces/ISuffixTree.class b/src/com/jwetherell/algorithms/data_structures/interfaces/ISuffixTree.class
diff --git a/src/com/jwetherell/algorithms/data_structures/interfaces/ITree.class b/src/com/jwetherell/algorithms/data_structures/interfaces/ITree.class
diff --git a/test/.DS_Store b/test/.DS_Store
diff --git a/test/com/.DS_Store b/test/com/.DS_Store
diff --git a/test/com/jwetherell/.DS_Store b/test/com/jwetherell/.DS_Store
diff --git a/test/com/jwetherell/algorithms/.DS_Store b/test/com/jwetherell/algorithms/.DS_Store
diff --git a/test/com/jwetherell/algorithms/data_structures/.DS_Store b/test/com/jwetherell/algorithms/data_structures/.DS_Store
diff --git a/test/com/jwetherell/algorithms/data_structures/test/AVLTreeTests.class b/test/com/jwetherell/algorithms/data_structures/test/AVLTreeTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/AllTests.class b/test/com/jwetherell/algorithms/data_structures/test/AllTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/BTreeTests.class b/test/com/jwetherell/algorithms/data_structures/test/BTreeTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/BinaryHeapTests.class b/test/com/jwetherell/algorithms/data_structures/test/BinaryHeapTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/BinarySearchTreeTests.class b/test/com/jwetherell/algorithms/data_structures/test/BinarySearchTreeTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/CompactSuffixTrieTests.class b/test/com/jwetherell/algorithms/data_structures/test/CompactSuffixTrieTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/DisjointSetTests.class b/test/com/jwetherell/algorithms/data_structures/test/DisjointSetTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/DisjointSetTests.java b/test/com/jwetherell/algorithms/data_structures/test/DisjointSetTests.java
@@ -73,6 +73,9 @@ public void testDisjointSet1() {
             final DisjointSet.Item<Integer> result = DisjointSet.find(item);
             Assert.assertTrue(result.equals(superSet));
         }
+        // Improve coverage
+        // assert find null results in null
+        assertNull(DisjointSet.find(null));
     }
 
     @Test

diff --git a/test/com/jwetherell/algorithms/data_structures/test/FenwickTreeTests$1.class b/test/com/jwetherell/algorithms/data_structures/test/FenwickTreeTests$1.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/FenwickTreeTests.class b/test/com/jwetherell/algorithms/data_structures/test/FenwickTreeTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/GraphTests.class b/test/com/jwetherell/algorithms/data_structures/test/GraphTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/GraphTests.java b/test/com/jwetherell/algorithms/data_structures/test/GraphTests.java
@@ -86,6 +86,10 @@ public void testGraph() {
         final Graph<Integer> clone = new Graph<Integer>(graph);
 
         Assert.assertTrue(graph.equals(clone) && graph.hashCode()==clone.hashCode());
+        // improve coverage
+        // to string test
+        Assert.assertNotNull(graph.toString());
+
     }
 
     @Test

diff --git a/test/com/jwetherell/algorithms/data_structures/test/HashArrayMappedTreeTests.class b/test/com/jwetherell/algorithms/data_structures/test/HashArrayMappedTreeTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/HashMapTests.class b/test/com/jwetherell/algorithms/data_structures/test/HashMapTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/ImplicitKeyTreapTests$MyTreap.class b/test/com/jwetherell/algorithms/data_structures/test/ImplicitKeyTreapTests$MyTreap.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/ImplicitKeyTreapTests.class b/test/com/jwetherell/algorithms/data_structures/test/ImplicitKeyTreapTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/IntervalSumTest.class b/test/com/jwetherell/algorithms/data_structures/test/IntervalSumTest.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/IntervalTreeTests$1.class b/test/com/jwetherell/algorithms/data_structures/test/IntervalTreeTests$1.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/IntervalTreeTests.class b/test/com/jwetherell/algorithms/data_structures/test/IntervalTreeTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/KdTreeTests.class b/test/com/jwetherell/algorithms/data_structures/test/KdTreeTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/LCPArrayTest.class b/test/com/jwetherell/algorithms/data_structures/test/LCPArrayTest.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/ListTests.class b/test/com/jwetherell/algorithms/data_structures/test/ListTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/LowestCommonAncestorTest.class b/test/com/jwetherell/algorithms/data_structures/test/LowestCommonAncestorTest.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/MatrixTests.class b/test/com/jwetherell/algorithms/data_structures/test/MatrixTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/MatrixTests.java b/test/com/jwetherell/algorithms/data_structures/test/MatrixTests.java
@@ -86,6 +86,10 @@ public void testMatrix() {
 
         Matrix<Integer> matrix9 = matrix7.multiply(matrix8);
         assertTrue("Matrix multiplication error. matrix9="+matrix9+" result4"+result4, matrix9.equals(result4));
+
+         // improve coverage
+        // test hash code
+        assertNotNull(matrix1.hashCode());
     }
 
     @Test

diff --git a/test/com/jwetherell/algorithms/data_structures/test/PatriciaTreeTests.class b/test/com/jwetherell/algorithms/data_structures/test/PatriciaTreeTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/QuadTreeTests.class b/test/com/jwetherell/algorithms/data_structures/test/QuadTreeTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/QueueTests.class b/test/com/jwetherell/algorithms/data_structures/test/QueueTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/RadixTrieTests.class b/test/com/jwetherell/algorithms/data_structures/test/RadixTrieTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/RedBlackTreeTests.class b/test/com/jwetherell/algorithms/data_structures/test/RedBlackTreeTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/SegmentTreeTests$1.class b/test/com/jwetherell/algorithms/data_structures/test/SegmentTreeTests$1.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/SegmentTreeTests.class b/test/com/jwetherell/algorithms/data_structures/test/SegmentTreeTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/SkipListMapTests.class b/test/com/jwetherell/algorithms/data_structures/test/SkipListMapTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/SkipListMapTests.java b/test/com/jwetherell/algorithms/data_structures/test/SkipListMapTests.java
@@ -24,6 +24,12 @@ public void testSkipListMap() {
                                    data.unsorted, data.invalid));
         assertTrue(JavaMapTest.testJavaMap(jMap, Integer.class, mapName,
                                            data.unsorted, data.sorted, data.invalid));
+
+         // // improve coverage
+        // // to string test
+        assertNotNull(map.toString());
+        // // get test
+        assertNull(map.get("fake-key"));
     }
 
 }
diff --git a/test/com/jwetherell/algorithms/data_structures/test/SkipListTests.class b/test/com/jwetherell/algorithms/data_structures/test/SkipListTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/SplayTreeTests.class b/test/com/jwetherell/algorithms/data_structures/test/SplayTreeTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/StackTests.class b/test/com/jwetherell/algorithms/data_structures/test/StackTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/SuffixArrayTest.class b/test/com/jwetherell/algorithms/data_structures/test/SuffixArrayTest.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/SuffixTreeTests.class b/test/com/jwetherell/algorithms/data_structures/test/SuffixTreeTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/SuffixTrieTests.class b/test/com/jwetherell/algorithms/data_structures/test/SuffixTrieTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/TernarySearchTreeTests.class b/test/com/jwetherell/algorithms/data_structures/test/TernarySearchTreeTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/TreapTests.class b/test/com/jwetherell/algorithms/data_structures/test/TreapTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/TreeMapTests.class b/test/com/jwetherell/algorithms/data_structures/test/TreeMapTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/TrieMapTests.class b/test/com/jwetherell/algorithms/data_structures/test/TrieMapTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/TrieTests.class b/test/com/jwetherell/algorithms/data_structures/test/TrieTests.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/common/HeapTest.class b/test/com/jwetherell/algorithms/data_structures/test/common/HeapTest.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/common/IteratorTest.class b/test/com/jwetherell/algorithms/data_structures/test/common/IteratorTest.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/common/JavaCollectionTest.class b/test/com/jwetherell/algorithms/data_structures/test/common/JavaCollectionTest.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/common/JavaMapTest.class b/test/com/jwetherell/algorithms/data_structures/test/common/JavaMapTest.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/common/ListIteratorTest.class b/test/com/jwetherell/algorithms/data_structures/test/common/ListIteratorTest.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/common/ListTest.class b/test/com/jwetherell/algorithms/data_structures/test/common/ListTest.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/common/MapTest.class b/test/com/jwetherell/algorithms/data_structures/test/common/MapTest.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/common/QueueTest.class b/test/com/jwetherell/algorithms/data_structures/test/common/QueueTest.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/common/SetTest.class b/test/com/jwetherell/algorithms/data_structures/test/common/SetTest.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/common/StackTest.class b/test/com/jwetherell/algorithms/data_structures/test/common/StackTest.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/common/SuffixTreeTest.class b/test/com/jwetherell/algorithms/data_structures/test/common/SuffixTreeTest.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/common/TreeTest.class b/test/com/jwetherell/algorithms/data_structures/test/common/TreeTest.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/common/Utils$TestData.class b/test/com/jwetherell/algorithms/data_structures/test/common/Utils$TestData.class
diff --git a/test/com/jwetherell/algorithms/data_structures/test/common/Utils.class b/test/com/jwetherell/algorithms/data_structures/test/common/Utils.class