Algorithms—217.Contains Duplicate
2015-07-30 22:01
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思路:遍历
耗时:456ms,中游
public class Solution { public boolean containsDuplicate(int[] nums) { Map<Integer,Integer> map=new HashMap<Integer,Integer>(); for(int i=0;i<nums.length;i++){ if(map.get(nums[i])==null){ map.put(nums[i],1); }else{ return true; } } return false; } }
耗时:456ms,中游
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