leetcode.cn 2026-07-01
🟡2812.find-the-safest-path-in-a-grid
🏷️ Tags
#breadth_first_search #union_find #array #binary_search #matrix #heap_priority_queue
🟡2812.find-the-safest-path-in-a-grid
🏷️ Tags
#breadth_first_search #union_find #array #binary_search #matrix #heap_priority_queue
Telegraph
find-the-safest-path-in-a-grid
给你一个下标从 0 开始、大小为 n x n 的二维矩阵 grid ,其中 (r, c) 表示:
leetcode.com 2026-07-01
🟡2812.find-the-safest-path-in-a-grid
🏷️ Tags
#breadth_first_search #union_find #array #binary_search #matrix #heap_priority_queue
🟡2812.find-the-safest-path-in-a-grid
🏷️ Tags
#breadth_first_search #union_find #array #binary_search #matrix #heap_priority_queue
Telegraph
find-the-safest-path-in-a-grid
You are given a 0-indexed 2D matrix grid of size n x n, where (r, c) represents:
leetcode.cn 2026-07-02
🟡3286.find-a-safe-walk-through-a-grid
🏷️ Tags
#breadth_first_search #graph #array #matrix #shortest_path #heap_priority_queue
🟡3286.find-a-safe-walk-through-a-grid
🏷️ Tags
#breadth_first_search #graph #array #matrix #shortest_path #heap_priority_queue
Telegraph
find-a-safe-walk-through-a-grid
给你一个 m x n 的二进制矩形 grid 和一个整数 health 表示你的健康值。 你开始于矩形的左上角 (0, 0) ,你的目标是矩形的右下角 (m - 1, n - 1) 。 你可以在矩形中往上下左右相邻格子移动,但前提是你的健康值始终是 正数 。 对于格子 (i, j) ,如果 grid[i][j] = 1 ,那么这个格子视为 不安全 的,会使你的健康值减少 1 。 如果你可以到达最终的格子,请你返回 true ,否则返回 false 。 注意 ,当你在最终格子的时候,你的健康值也必须为 正数 。…
leetcode.com 2026-07-02
🟡3286.find-a-safe-walk-through-a-grid
🏷️ Tags
#breadth_first_search #graph #array #matrix #shortest_path #heap_priority_queue
🟡3286.find-a-safe-walk-through-a-grid
🏷️ Tags
#breadth_first_search #graph #array #matrix #shortest_path #heap_priority_queue
Telegraph
find-a-safe-walk-through-a-grid
You are given an m x n binary matrix grid and an integer health. You start on the upper-left corner (0, 0) and would like to get to the lower-right corner (m - 1, n - 1). You can move up, down, left, or right from one cell to another adjacent cell as long…
leetcode.cn 2026-07-05
🔴1301.number-of-paths-with-max-score
🏷️ Tags
#array #dynamic_programming #matrix
🔴1301.number-of-paths-with-max-score
🏷️ Tags
#array #dynamic_programming #matrix
Telegraph
number-of-paths-with-max-score
给你一个正方形字符数组 board ,你从数组最右下方的字符 'S' 出发。 你的目标是到达数组最左上角的字符 'E' ,数组剩余的部分为数字字符 1, 2, ..., 9 或者障碍 'X'。在每一步移动中,你可以向上、向左或者左上方移动,可以移动的前提是到达的格子没有障碍。 一条路径的 「得分」 定义为:路径上所有数字的和。 请你返回一个列表,包含两个整数:第一个整数是 「得分」 的最大值,第二个整数是得到最大得分的方案数,请把结果对 10^9 + 7 取余。 如果没有任何路径可以到达终点,请返回 [0…
leetcode.com 2026-07-05
🔴1301.number-of-paths-with-max-score
🏷️ Tags
#array #dynamic_programming #matrix
🔴1301.number-of-paths-with-max-score
🏷️ Tags
#array #dynamic_programming #matrix
Telegraph
number-of-paths-with-max-score
You are given a square board of characters. You can move on the board starting at the bottom right square marked with the character 'S'. You need to reach the top left square marked with the character 'E'. The rest of the squares are labeled either with a…
leetcode.cn 2026-09-01
🟡3568.minimum-moves-to-clean-the-classroom
🏷️ Tags
#bit_manipulation #breadth_first_search #array #hash_table #matrix
🟡3568.minimum-moves-to-clean-the-classroom
🏷️ Tags
#bit_manipulation #breadth_first_search #array #hash_table #matrix
Telegraph
minimum-moves-to-clean-the-classroom
给你一个 m x n 的网格图 classroom,其中一个学生志愿者负责清理散布在教室里的垃圾。网格图中的每个单元格是以下字符之一:
leetcode.com 2026-09-01
🟡3568.minimum-moves-to-clean-the-classroom
🏷️ Tags
#bit_manipulation #breadth_first_search #array #hash_table #matrix
🟡3568.minimum-moves-to-clean-the-classroom
🏷️ Tags
#bit_manipulation #breadth_first_search #array #hash_table #matrix
Telegraph
minimum-moves-to-clean-the-classroom
You are given an m x n grid classroom where a student volunteer is tasked with cleaning up litter scattered around the room. Each cell in the grid is one of the following:
leetcode.cn 2026-09-29
🔴2267.check-if-there-is-a-valid-parentheses-string-path
🏷️ Tags
#array #dynamic_programming #matrix #bracket_sequences
🔴2267.check-if-there-is-a-valid-parentheses-string-path
🏷️ Tags
#array #dynamic_programming #matrix #bracket_sequences
Telegraph
check-if-there-is-a-valid-parentheses-string-path
一个括号字符串是一个 非空 且只包含 '(' 和 ')' 的字符串。如果下面 任意 条件为 真 ,那么这个括号字符串就是 合法的 。
leetcode.com 2026-09-29
🔴2267.check-if-there-is-a-valid-parentheses-string-path
🏷️ Tags
#array #dynamic_programming #matrix #bracket_sequences
🔴2267.check-if-there-is-a-valid-parentheses-string-path
🏷️ Tags
#array #dynamic_programming #matrix #bracket_sequences
Telegraph
check-if-there-is-a-valid-parentheses-string-path
A parentheses string is a non-empty string consisting only of '(' and ')'. It is valid if any of the following conditions is true: