Contains Duplicate

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