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leetcode64:最小路径和 #139

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@sisterAn

给定一个包含非负整数的 m x n 网格 grid ,请找出一条从左上角到右下角的路径,使得路径上的数字总和为最小。

说明:每次只能向下或者向右移动一步。

 

示例 1:

输入:grid = [[1,3,1],[1,5,1],[4,2,1]]
输出:7
解释:因为路径 1→3→1→1→1 的总和最小。

示例 2:

输入:grid = [[1,2,3],[4,5,6]]
输出:12

提示:

  • m == grid.length
  • n == grid[i].length
  • 1 <= m, n <= 200
  • 0 <= grid[i][j] <= 100

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