[LeetCode]217. Contains Duplicate

题目

Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the array, and it should return false if every element is distinct.

给一个数组看是否有重复的值。有的话就返回true，没有就返回false

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