diff --git a/problems/0072.编辑距离.md b/problems/0072.编辑距离.md index 3802c228..530774ee 100644 --- a/problems/0072.编辑距离.md +++ b/problems/0072.编辑距离.md @@ -327,5 +327,42 @@ const minDistance = (word1, word2) => { }; ``` +TypeScript: + +```typescript +function minDistance(word1: string, word2: string): number { + /** + dp[i][j]: word1前i个字符,word2前j个字符,最少操作数 + dp[0][0]=0:表示word1前0个字符为'', word2前0个字符为'' + */ + const length1: number = word1.length, + length2: number = word2.length; + const dp: number[][] = new Array(length1 + 1).fill(0) + .map(_ => new Array(length2 + 1).fill(0)); + for (let i = 0; i <= length1; i++) { + dp[i][0] = i; + } + for (let i = 0; i <= length2; i++) { + dp[0][i] = i; + } + for (let i = 1; i <= length1; i++) { + for (let j = 1; j <= length2; j++) { + if (word1[i - 1] === word2[j - 1]) { + dp[i][j] = dp[i - 1][j - 1]; + } else { + dp[i][j] = Math.min( + dp[i - 1][j], + dp[i][j - 1], + dp[i - 1][j - 1] + ) + 1; + } + } + } + return dp[length1][length2]; +}; +``` + + + -----------------------