Create Missing Number In Arithmetic Progression.java

varunu28 · web-flow · commit 93a24bcbcff0 · 2019-10-26T19:46:46.000-07:00
diff --git a/Easy/Missing Number In Arithmetic Progression.java b/Easy/Missing Number In Arithmetic Progression.java
@@ -0,0 +1,12 @@
+class Solution {
+    public int missingNumber(int[] arr) {
+        int n = arr.length;
+        int d = (arr[n - 1] - arr[0]) / n;
+        for (int i = 1; i < n; i++) {
+            if (arr[i] - arr[i - 1] != d) {
+                return arr[i - 1] + d;
+            }
+        }
+        return d;
+    }
+}
