diff --git a/problems/0063.不同路径II.md b/problems/0063.不同路径II.md index eeecad70..52f00322 100644 --- a/problems/0063.不同路径II.md +++ b/problems/0063.不同路径II.md @@ -279,6 +279,30 @@ func uniquePathsWithObstacles(obstacleGrid [][]int) int { ``` +Javascript +``` Javascript +var uniquePathsWithObstacles = function(obstacleGrid) { + const m = obstacleGrid.length + const n = obstacleGrid[0].length + const dp = Array(m).fill().map(item => Array(n).fill(0)) + + for (let i = 0; i < m && obstacleGrid[i][0] === 0; ++i) { + dp[i][0] = 1 + } + + for (let i = 0; i < n && obstacleGrid[0][i] === 0; ++i) { + dp[0][i] = 1 + } + + for (let i = 1; i < m; ++i) { + for (let j = 1; j < n; ++j) { + dp[i][j] = obstacleGrid[i][j] === 1 ? 0 : dp[i - 1][j] + dp[i][j - 1] + } + } + + return dp[m - 1][n - 1] +}; +``` -----------------------