题目：原题链接（中等）
标签：数组、动态规划
解法 | 时间复杂度 | 空间复杂度 | 执行用时 |
Ans 1 (Python) | O ( N × M ) | O ( N × M ) | 88ms (6.12%) |
Ans 2 (Python) | |||
Ans 3 (Python) |
解法一：
class Solution:
_BIG = 200 * 100
def minPathSum(self, grid: List[List[int]]) -> int:
m, n = len(grid), len(grid[0])
dp = [[0] * n for _ in range(m)]
for i in range(m):
for j in range(n):
if i == 0 and j == 0:
dp[i][j] = grid[i][j]
else:
dp[i][j] = grid[i][j] + min((dp[i - 1][j] if i > 0 else self._BIG),
(dp[i][j - 1] if j > 0 else self._BIG))
return dp[-1][-1]
