auto commit

2018-12-17 18:27:21 +08:00 · 2018-12-17 18:27:21 +08:00 · 76ad497f7d
commit 76ad497f7d
parent 4b35ec32a3
1 changed files with 18 additions and 24 deletions
--- a/notes/Leetcode
+++ b/notes/Leetcode
@ -2551,22 +2551,16 @@ public int minPathSum(int[][] grid) {
    int[] dp = new int[n];
    for (int i = 0; i < m; i++) {
        for (int j = 0; j < n; j++) {
-                if(i==0) {
            if (j == 0) {
-                        dp[j] = grid[i][j];
+                dp[j] = dp[j];        // 只能从上侧走到该位置
+            } else if (i == 0) {
+                dp[j] = dp[j - 1];    // 只能从左侧走到该位置
+            } else {
+                dp[j] = Math.min(dp[j - 1], dp[j]);
            }
-                    else {
-                    dp[j]=dp[j-1] + grid[i][j];
-                    }
-                }else if(j==0) {
-                    dp[j] = dp[j] + grid[i][j];
-                }
-                else{
-                dp[j] = Math.min(dp[j],dp[j-1])+grid[i][j];
+            dp[j] += grid[i][j];
        }
    }
-        }
-        
    return dp[n - 1];
 }
 ```