From fa3a45c3dbd3cb58b9c0027cb2c8fe9e7727a439 Mon Sep 17 00:00:00 2001 From: Steve2020 <841532108@qq.com> Date: Fri, 20 May 2022 16:33:34 +0800 Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=EF=BC=880072.=E7=BC=96?= =?UTF-8?q?=E8=BE=91=E8=B7=9D=E7=A6=BB.md=EF=BC=89=EF=BC=9A=E5=A2=9E?= =?UTF-8?q?=E5=8A=A0typescript=E7=89=88=E6=9C=AC?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- ...26\350\276\221\350\267\235\347\246\273.md" | 37 +++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git "a/problems/0072.\347\274\226\350\276\221\350\267\235\347\246\273.md" "b/problems/0072.\347\274\226\350\276\221\350\267\235\347\246\273.md" index 3802c228d6..530774eefc 100644 --- "a/problems/0072.\347\274\226\350\276\221\350\267\235\347\246\273.md" +++ "b/problems/0072.\347\274\226\350\276\221\350\267\235\347\246\273.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]; +}; +``` + + + -----------------------