583. 两个字符串的删除操作 给定两个单词 word1 和 word2,找到使得 word1 和 word2 相同所需的最小步数,每步可以删除任意一个字符串中的一个字符. 示例: 输入: "sea", "eat" 输出: 2 解释: 第一步将"sea"变为"ea",第二步将"eat"变为"ea" 提示: 给定单词的长度不超过500. 给定单词中的字符只含有小写字母. PS: 求最长公共…

两个字符串的删除操作 给定两个单词 word1 和 word2,找到使得 word1 和 word2 相同所需的最小步数,每步可以删除任意一个字符串中的一个字符. 示例 1: 输入: "sea", "eat" 输出: 2 解释: 第一步将"sea"变为"ea",第二步将"eat"变为"ea" 说明: 给定单词的长度不超过500. 给定单词中的字符只含有小写字母. 思路 首先求出最长公共子…

Given two words word1 and word2, find the minimum number of steps required to make word1 and word2 the same, where in each step you can delete one character in either string. Example 1: Input: "sea", "eat" Output: 2 Explanation: You ne…

Given two words word1 and word2, find the minimum number of steps required to make word1 and word2 the same, where in each step you can delete one character in either string. Example 1: Input: "sea", "eat" Output: 2 Explanation: You ne…

Given two words word1 and word2, find the minimum number of steps required to make word1 and word2 the same, where in each step you can delete one character in either string. Example 1: Input: "sea", "eat" Output: 2 Explanation: You ne…

712. 两个字符串的最小ASCII删除和 给定两个字符串s1, s2,找到使两个字符串相等所需删除字符的ASCII值的最小和. 示例 1: 输入: s1 = "sea", s2 = "eat" 输出: 231 解释: 在 "sea" 中删除 "s" 并将 "s" 的值(115)加入总和. 在 "eat" 中删除 "t" 并将 116 加入总和. 结束时,两个字符串相…

题目描述: https://leetcode-cn.com/problems/minimum-ascii-delete-sum-for-two-strings/ 解题思路: 也是典型的dp问题.利用二维dp数组求解. 建立一个二维数组Dp[ i ][ j ],Dp[ i ][ j ]表示从s1中拿出 i 个元素和从 s2 中拿出 j 个元素的最小删除数. 当s1[i]=s2[j]时,dp[i][j] = dp[i-1][j-1]. 当s1[i]!=s2[j], 动态转移方程为: dp[i][j]…

string addstring(string s1,string s2) { string ans=""; ; ,j=s2.length()-;i>=||j>=;i--,j--) { ?:s1[i]-'; ?:s2[j]-'; +'; ans=c+ans; f=(x+y+f)/; } ) ans='+ans; return ans; }…

Given two strings s1, s2, find the lowest ASCII sum of deleted characters to make two strings equal. Example 1: Input: s1 = "sea", s2 = "eat" Output: 231 Explanation: Deleting "s" from "sea" adds the ASCII value of…

Given two strings s1, s2, find the lowest ASCII sum of deleted characters to make two strings equal. Example 1: Input: s1 = "sea", s2 = "eat" Output: 231 Explanation: Deleting "s" from "sea" adds the ASCII value of…