contains-duplicate solution

Author: lwy-0418

contains-duplicate/wonYeong.java

@@ -0,0 +1,10 @@
+class Solution {
+    public boolean containsDuplicate(int[] nums) {
+        Arrays.sort(nums);
+        for(int i = 0; i < nums.length - 1; i++) {
+            if(nums[i] == nums[i+1])
+                return true;
+        }
+        return false;
+    }
+}