diff --git a/contains-duplicate/kimbro97.java b/contains-duplicate/kimbro97.java new file mode 100644 index 000000000..901ae747c --- /dev/null +++ b/contains-duplicate/kimbro97.java @@ -0,0 +1,15 @@ +import java.util.HashSet; + +class Solution { + public boolean containsDuplicate(int[] nums) { + HashSet numSet = new HashSet<>(); + for (int i = 0; i < nums.length; i++) { + + if (numSet.contains(nums[i])) { + return true; + } + numSet.add(nums[i]); + } + return false; + } +}