leetcode每日一题 P2536 子矩阵元素加 1
差分与前缀和互逆
面试经典150题 P1 两数之和
时间轴 2025-11-13 init 题目： P1 两数之和https://leetcode.cn/problems/two-sum/description/?envType=study-plan-v2&envId=top-interview-150 P1 两数之和https://leetcode.cn/problems/two-sum/description/?envType=study-plan-v2&envId=top-100-liked 排序+双指针12345678910111213141516171819202122232425262728293031323334353637383940#include <vector>#include <algorithm>#include <unordered_map>using std::vector;using std::unordered_map;class Solution { public: vector<int>...