# Minimum Path Sum @ LeetCode (Python)

**kitt**posted @ 2014年3月13日 01:30 in LeetCode , 2143 阅读

动态规划, 这道题和Unique Paths II如出一辙。

class Solution: # @param grid, a list of lists of integers # @return an integer def minPathSum(self, grid): rows = len(grid) cols = len(grid[0]) # initialization dp = [[0 for j in xrange(cols)] for i in xrange(rows)] dp[0][0] = grid[0][0] for i in xrange(1, cols): dp[0][i] = dp[0][i - 1] + grid[0][i] for i in xrange(1, rows): dp[i][0] = dp[i - 1][0] + grid[i][0] # dynamic programming for i in xrange(1, rows): for j in xrange(1, cols): dp[i][j] = min(dp[i - 1][j], dp[i][j - 1]) + grid[i][j] return dp[rows - 1][cols - 1]

2022年9月17日 12:51

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