leetcode.com 2026-03-26
🔴3548.equal-sum-grid-partition-ii
🏷️ Tags
#array #hash_table #enumeration #matrix #prefix_sum
🔴3548.equal-sum-grid-partition-ii
🏷️ Tags
#array #hash_table #enumeration #matrix #prefix_sum
Telegraph
equal-sum-grid-partition-ii
You are given an m x n matrix grid of positive integers. Your task is to determine if it is possible to make either one horizontal or one vertical cut on the grid such that:
leetcode.cn 2026-03-27
🟢2946.matrix-similarity-after-cyclic-shifts
🏷️ Tags
#array #math #matrix #simulation
🟢2946.matrix-similarity-after-cyclic-shifts
🏷️ Tags
#array #math #matrix #simulation
Telegraph
matrix-similarity-after-cyclic-shifts
给你一个下标从 0 开始且大小为 m x n 的整数矩阵 mat 和一个整数 k 。请你将矩阵中的 奇数 行循环 右 移 k 次,偶数 行循环 左 移 k 次。 如果初始矩阵和最终矩阵完全相同,则返回 true ,否则返回 false 。 示例 1: 输入:mat = [[1,2,1,2],[5,5,5,5],[6,3,6,3]], k = 2 输出:true 解释: 初始矩阵如图一所示。 图二表示对奇数行右移一次且对偶数行左移一次后的矩阵状态。 图三是经过两次循环移位后的最终矩阵状态,与初始矩阵相同。…
leetcode.com 2026-03-27
🟢2946.matrix-similarity-after-cyclic-shifts
🏷️ Tags
#array #math #matrix #simulation
🟢2946.matrix-similarity-after-cyclic-shifts
🏷️ Tags
#array #math #matrix #simulation
Telegraph
matrix-similarity-after-cyclic-shifts
You are given an m x n integer matrix mat and an integer k. The matrix rows are 0-indexed. The following proccess happens k times:
leetcode.cn 2026-03-28
🔴2573.find-the-string-with-lcp
🏷️ Tags
#greedy #union_find #array #string #dynamic_programming #matrix
🔴2573.find-the-string-with-lcp
🏷️ Tags
#greedy #union_find #array #string #dynamic_programming #matrix
Telegraph
find-the-string-with-lcp
对任一由 n 个小写英文字母组成的字符串 word ,我们可以定义一个 n x n 的矩阵,并满足:
leetcode.cn 2026-04-02
🟡3418.maximum-amount-of-money-robot-can-earn
🏷️ Tags
#array #dynamic_programming #matrix
🟡3418.maximum-amount-of-money-robot-can-earn
🏷️ Tags
#array #dynamic_programming #matrix
Telegraph
maximum-amount-of-money-robot-can-earn
给你一个 m x n 的网格。一个机器人从网格的左上角 (0, 0) 出发,目标是到达网格的右下角 (m - 1, n - 1)。在任意时刻,机器人只能向右或向下移动。 网格中的每个单元格包含一个值 coins[i][j]:
leetcode.com 2026-04-02
🟡3418.maximum-amount-of-money-robot-can-earn
🏷️ Tags
#array #dynamic_programming #matrix
🟡3418.maximum-amount-of-money-robot-can-earn
🏷️ Tags
#array #dynamic_programming #matrix
Telegraph
maximum-amount-of-money-robot-can-earn
You are given an m x n grid. A robot starts at the top-left corner of the grid (0, 0) and wants to reach the bottom-right corner (m - 1, n - 1). The robot can move either right or down at any point in time. The grid contains a value coins[i][j] in each cell:
leetcode.cn 2026-04-26
🟡1559.detect-cycles-in-2d-grid
🏷️ Tags
#depth_first_search #breadth_first_search #union_find #array #matrix
🟡1559.detect-cycles-in-2d-grid
🏷️ Tags
#depth_first_search #breadth_first_search #union_find #array #matrix
Telegraph
detect-cycles-in-2d-grid
给你一个二维字符网格数组 grid ,大小为 m x n ,你需要检查 grid 中是否存在 相同值 形成的环。 一个环是一条开始和结束于同一个格子的长度 大于等于 4 的路径。对于一个给定的格子,你可以移动到它上、下、左、右四个方向相邻的格子之一,可以移动的前提是这两个格子有 相同的值 。 同时,你也不能回到上一次移动时所在的格子。比方说,环 (1, 1) -> (1, 2) -> (1, 1) 是不合法的,因为从 (1, 2) 移动到 (1, 1) 回到了上一次移动时的格子。 如果 grid 中有相同值形成的环,请你返回…
leetcode.com 2026-04-26
🟡1559.detect-cycles-in-2d-grid
🏷️ Tags
#depth_first_search #breadth_first_search #union_find #array #matrix
🟡1559.detect-cycles-in-2d-grid
🏷️ Tags
#depth_first_search #breadth_first_search #union_find #array #matrix
Telegraph
detect-cycles-in-2d-grid
Given a 2D array of characters grid of size m x n, you need to find if there exists any cycle consisting of the same value in grid. A cycle is a path of length 4 or more in the grid that starts and ends at the same cell. From a given cell, you can move to…
leetcode.cn 2026-04-27
🟡1391.check-if-there-is-a-valid-path-in-a-grid
🏷️ Tags
#depth_first_search #breadth_first_search #union_find #array #matrix
🟡1391.check-if-there-is-a-valid-path-in-a-grid
🏷️ Tags
#depth_first_search #breadth_first_search #union_find #array #matrix
Telegraph
check-if-there-is-a-valid-path-in-a-grid
给你一个 m x n 的网格 grid。网格里的每个单元都代表一条街道。grid[i][j] 的街道可以是: