标签:数组
219. Contains Duplicate II
Given an array of integers and an integer k, find out whether there are two distinct indices i and j in the array such that nums[i] = nums[j]and the difference between i and j is at most k.
题目大意:
找到数组中两个相同元素,如果这两个元素的距离小于等于k,则返回true。如果任意两个相同元素的距离都大于k,或者没有两个元素是相同的,那么返回false。
代码如下:
class Solution { public: bool containsNearbyDuplicate(vector<int>& nums, int k) { unordered_map<int ,int> myMap; for(int i = 0;i < nums.size();i++) { if(myMap.find(nums[i]) == myMap.end()) { myMap.insert(pair<int,int>(nums[i],i)); } else { if(i - myMap[nums[i]] <= k) { return true; } else myMap[nums[i]] = i; } } return false; } };
2016-08-12 01:54:29
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leetCode 219. Contains Duplicate II 数组
标签:数组
原文地址:http://qiaopeng688.blog.51cto.com/3572484/1837133