add 2363

fishercoder1534 · fishercoder1534 · commit ab5399878b16 · 2022-08-06T14:16:52.000-07:00
diff --git a/README.md b/README.md
@@ -8,6 +8,7 @@ _If you like this project, please leave me a star._ &#9733;
 
 | #    |      Title     | Solutions                                                                                                                                | Video                                                                         | Difficulty                       | Tag                  
 |------|----------------|------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------|----------------------------------|-------------
+| 2363 |[Merge Similar Items](https://leetcode.com/problems/merge-similar-items/)| [Java](../master/src/main/java/com/fishercoder/solutions/_2363.java)                                                                     || Easy                                                                             ||
 | 2357 |[Make Array Zero by Subtracting Equal Amounts](https://leetcode.com/problems/make-array-zero-by-subtracting-equal-amounts/)| [Java](../master/src/main/java/com/fishercoder/solutions/_2357.java)                                                                     || Easy                                                                             ||
 | 2352 |[Equal Row and Column Pairs](https://leetcode.com/problems/equal-row-and-column-pairs/)| [Java](../master/src/main/java/com/fishercoder/solutions/_2352.java)                                                                     || Medium                                                                        ||
 | 2351 |[First Letter to Appear Twice](https://leetcode.com/problems/first-letter-to-appear-twice/)| [Java](../master/src/main/java/com/fishercoder/solutions/_2351.java)                                                                     || Easy                                                                          ||
diff --git a/src/main/java/com/fishercoder/solutions/_2363.java b/src/main/java/com/fishercoder/solutions/_2363.java
@@ -0,0 +1,25 @@
+package com.fishercoder.solutions;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.TreeMap;
+
+public class _2363 {
+    public static class Solution1 {
+        public List<List<Integer>> mergeSimilarItems(int[][] items1, int[][] items2) {
+            List<List<Integer>> result = new ArrayList<>();
+            TreeMap<Integer, Integer> map = new TreeMap<>();
+            for (int[] item : items1) {
+                map.put(item[0], map.getOrDefault(item[0], 0) + item[1]);
+            }
+            for (int[] item : items2) {
+                map.put(item[0], map.getOrDefault(item[0], 0) + item[1]);
+            }
+            for (int key : map.keySet()) {
+                result.add(new ArrayList<>(Arrays.asList(key, map.get(key))));
+            }
+            return result;
+        }
+    }
+}
