Create Find the Duplicate Number

Author: HarryWangATX

Find the Duplicate Number

@@ -0,0 +1,15 @@
+import java.util.Arrays;
+
+class Solution {
+    public int findDuplicate(int[] nums) {
+        Arrays.sort(nums);
+        
+        for(int i = 0; i<nums.length-1; i++){
+            if(nums[i]==nums[i+1]){
+                return nums[i];
+            }
+        }
+        
+        return 0;
+    }
+}