LeetCode219. Contains Duplicate II
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题目链接:
https://leetcode.com/problems/contains-duplicate-ii/
题目描述:
给出一个整数数组,判断该数组内是否有两个元素值是相同的,且他们的索引值相差不大于k,是则返回true,否则返回false
题目分析:
水题。
代码:
class Solution {public: bool containsNearbyDuplicate(vector<int>& nums, int k) { int len=nums.size(); map<int,int> map; for(int i=0;i<len;i++){ if(map.find(nums[i])!=map.end() && i-map[nums[i]]<=k){ return true; } else{ map[nums[i]]=i; } } return false; }};
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