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…

Leetcode之动态规划(DP)专题-712. 两个字符串的最小ASCII删除和(Minimum ASCII Delete Sum for Two Strings) 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…

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…

lc 712 Minimum ASCII Delete Sum for Two Strings 712 Minimum ASCII Delete Sum for Two Strings 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"…

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 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…

题目如下: 解题思路:本题和[leetcode]583. Delete Operation for Two Strings 类似,区别在于word1[i] != word2[j]的时候,是删除word1[i]还是word2[j]取决于min(dp[i-1][j]+ord(word1[i-1]),dp[i][j-1]+ord(word2[j-1])). 代码如下: class Solution(object): def minimumDeleteSum(self, s1, s2): ""…

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…

题目描述 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,两个字符串相等,115 + 116 = 231…

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,两个字符串相等,115 + 116 = 231 就是符合…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 日期 题目地址:https://leetcode.com/problems/minimum-ascii-delete-sum-for-two-strings/description/ 题目描述 Given two strings s1, s2, find the lowest ASCII sum of deleted characters to ma…

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…

题目: 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…

public int minimumDeleteSum(String s1, String s2) { /* 标准的动态规划题目,难点在于想出将两个字符串删除到相同的过程 这里从两个字符串的开头字符考虑,一个一个得考虑到最后一个,我们用二维数组dp[i][j]代表字符串1前i个字符和字符串2前j个字符实现相同所需要 删除的ASCII value,有三种方法可以到达dp[i][j]: 1.dp[i-1][j] + str1[i]:由于从dp[i-1][j]到dp[i][j]是多考虑了str1的一个…

https://leetcode.com/problems/minimum-ascii-delete-sum-for-two-strings/ 给定两个string s1,s2,从s1和s2中删除一些字符,使s1和s2相同,并且要求删除的所有字符的ASCLL码之和最小. 解法: 找出s1和s2的公共子串,并使得其ASCLL码之和最大,最用s1,s2所有字符ASCLL码之和减去最大子串的ASCLL码之和,即为需要删掉的最小ASCLL码值. 求ASCLL码之和最大的公共子串与求两字符串最长公共子串的…

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]…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 日期 题目地址:https://leetcode.com/problems/delete-operation-for-two-strings/description/ 题目描述 Given two words word1 and word2, find the minimum number of steps required to make word…

Given an array of n positive integers and a positive integer s, find the minimal length of a subarray of which the sum ≥ s. If there isn't one, return 0 instead. For example, given the array [2,3,1,2,4,3] and s = 7,the subarray [4,3] has the minimal…

一.题目: 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,两个字符串相等,115 + 116 = 23…

583. Delete Operation for Two Strings 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", "e…

题目: Design a data structure that supports all following operations in averageO(1) time. Note: Duplicate elements are allowed. insert(val): Inserts an item val to the collection. remove(val): Removes an item val from the collection if present. getRand…

Given an array of n positive integers and a positive integer s, find the minimal length of a subarray of which the sum ≥ s. If there isn't one, return 0 instead. For example, given the array [2,3,1,2,4,3] and s = 7,the subarray [4,3] has the minimal…

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: 2Explanation: You need o…

Given an array of n positive integers and a positive integer s, find the minimal length of a subarray of which the sum ≥ s. If there isn't one, return 0 instead. For example, given the array [2,3,1,2,4,3] and s = 7,the subarray [4,3] has the minimal…

题意:给一个序列,找出其中一个连续子序列,其和大于s但是所含元素最少.返回其长度.0代表整个序列之和均小于s. 思路:O(n)的方法容易想.就是扫一遍,当子序列和大于s时就一直删减子序列前面的一个元素,直到小于s就停下,继续累加后面的. class Solution { public: int minSubArrayLen(int s, vector<int>& nums) { , sum=; ; i<nums.size(); i++) { cnt++;//记录个数 sum+=n…

题目: Given an array of n positive integers and a positive integer s, find the minimal length of a subarray of which the sum ≥ s. If there isn't one, return 0 instead. For example, given the array [2,3,1,2,4,3] and s = 7, the subarray [4,3] has the min…

MERGE 目标表 USING 源表 ON 匹配条件 WHEN MATCHED THEN 语句 WHEN NOT MATCHED THEN 语句; http://www.chinaz.com/program/2010/1014/137713.shtml…

注意,在IDE运行时,可能会因为开的数组太大而报错,这时我们可以把数组开小一点来进行调试....提交的时候把数组的大小改成1000005即可.... #include <iostream> #include <cstdio> #include <cstring> using namespace std; const int maxn = 1000005; int main() { char str[maxn]; while (scanf("%s",…