优化 0062不同路径 python3版本

优化 0062不同路径 python3版本

Author: jojoo15

problems/0062.不同路径.md

@@ -279,9 +279,7 @@ Python：
 ```python
 class Solution: # 动态规划
     def uniquePaths(self, m: int, n: int) -> int:
-        dp = [[0 for i in range(n)] for j in range(m)]
-        for i in range(m): dp[i][0] = 1
-        for j in range(n): dp[0][j] = 1
+        dp = [[1 for i in range(n)] for j in range(m)]
         for i in range(1, m):
             for j in range(1, n):
                 dp[i][j] = dp[i][j - 1] + dp[i - 1][j]