217. Contains Duplicate

Added solution for 217. Contains Duplicate
Gyanachand1 · Apr 4, 2022 · db8e059 · db8e059
1 parent 933ca4a
commit db8e059
Showing 1 changed file with 13 additions and 0 deletions.
diff --git a/java/217_Contains_Duplicate.java b/java/217_Contains_Duplicate.java
@@ -0,0 +1,13 @@
+class Solution {
+ public boolean containsDuplicate(int[] nums) {
+ if(nums.length == 0) return false;
+ Set<Integer> set = new HashSet<>();
+ for(int num: nums){
+ if(set.contains(num)){
+ return true;
+ }
+ set.add(num);
+ }
+ return false;
+ }
+}