Leetcode 219. Contains Duplicate II
文章作者:Tyan 部落格:noahsnail.com | CSDN | 簡書
1. Description
2. Solution
class Solution { public: bool containsNearbyDuplicate(vector<int>& nums, int k) { unordered_map<int, int> m; for(int i = 0; i < nums.size(); i++) { if(m.find(nums[i]) != m.end() && (i - m[nums[i]] <= k)) { return true; } m[nums[i]] = i; } return false; } };
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