题目链接
#pragma once #include运行结果 提交结果#include #include using namespace std; class Solution { public: bool containsDuplicate(vector & nums) { unordered_set hashset; for (int num : nums) { if (hashset.count(num) > 0) { return true; } hashset.insert(num); } return false; } }; int main() { int arr[] = { 1,2,3,4}; vector nums; for (int i = 0; i < sizeof(arr) / sizeof(int); i++) { nums.push_back(arr[i]); } Solution S; bool res = S.containsDuplicate(nums); if (res) { cout << "存在重复值!" << endl; } else { cout << "不存在重复值!" << endl; } system("pause"); return 0; }
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