Given a non-empty string, encode the string such that its encoded length is the shortest. The encoding rule is: k[encoded_string], where the encoded_string inside the square brackets is being repeated exactly k times. Note: k will be a positive integ…

Given a non-empty string, encode the string such that its encoded length is the shortest. The encoding rule is: k[encoded_string], where the encoded_string inside the square brackets is being repeated exactly k times. Note: k will be a positive integ…

Leetcode 8. String to Integer (atoi) atoi函数实现 (字符串) 题目描述 实现atoi函数,将一个字符串转化为数字 测试样例 Input: "42" Output: 42 Input: " -42" Output: -42 Input: "4193 with words" Output: 4193 Input: "words and 987" Output: 0 详细分析 这道题的cor…

Given a string s consists of upper/lower-case alphabets and empty space characters ' ', return the length of last word in the string.If the last word does not exist, return 0. Note: A word is defined as a character sequence consists of non-space char…

You need to construct a string consists of parenthesis and integers from a binary tree with the preorder traversing way. The null node needs to be represented by empty parenthesis pair "()". And you need to omit all the empty parenthesis pairs t…

Given an encoded string, return it's decoded string. The encoding rule is: k[encoded_string], where the encoded_string inside the square brackets is being repeated exactly k times. Note that k is guaranteed to be a positive integer. You may assume th…

Given a string, find the length of the longest serial substring without repeating characters. Examples: Given "abcabcbb", the answer is "abc", which the length is 3. Given "bbbbb", the answer is "b", with the length…

题目来源:https://leetcode.com/problems/find-the-shortest-superstring/description/ 标记难度:Hard 提交次数:3/4 代码效率:2.93% -> 79.31% 题意 有N个字符串,找到最小的字符串S,使得这N个字符串都是S的子串.其中N<=12,字符串的长度<=20. 分析 这道题比赛的时候我没有做出来,但我自认为自己已经找到了正确的解法(确实差不多是正确的),只要再调一小会就能调出来了!结果事实是又花了两天才弄…

F - The Minimum Length Time Limit:1000MS     Memory Limit:131072KB     64bit IO Format:%lld & %llu Submit Status Description There is a string A. The length of A is less than 1,000,000. I rewrite it again and again. Then I got a new string: AAAAAA...…

Given a string and an integer k, you need to reverse the first k characters for every 2k characters counting from the start of the string. If there are less than k characters left, reverse all of them. If there are less than 2k but greater than or eq…

Note: This is a companion problem to the System Design problem: Design TinyURL. TinyURL is a URL shortening service where you enter a URL such as https://leetcode.com/problems/design-tinyurl and it returns a short URL such as http://tinyurl.com/4e9iA…

Note: This is a companion problem to the System Design problem: Design TinyURL. TinyURL is a URL shortening service where you enter a URL such as https://leetcode.com/problems/design-tinyurl and it returns a short URL such as http://tinyurl.com/4e9iA…

Given an array of n positive integers and a positive integer s, find the minimal length of a contiguous subarray of which the sum ≥ s. If there isn't one, return 0 instead. Example: Input: s = 7, nums = [2,3,1,2,4,3] Output: 2 Explanation: the subarr…

[Codeforces 1005F]Berland and the Shortest Paths(最短路树+dfs) 题面 题意:给你一个无向图,1为起点,求生成树让起点到其他个点的距离最小,距离最小的生成树可能有多个.给定k,如果方案数比k小就输出全部方案,否则输出k种方案. 分析 先跑最短路,对于每个点找到它在最短路树上可能的父亲.即对于\((x,y) \in E,dist(y)=dist(x)+len(x,y)\).那么y在最短路上可能的父亲就是x.说"可能"是因为最短路树可能不…

Question: 整理String类的Length().charAt(). getChars().replace(). toUpperCase(). toLowerCase().trim().toCharArray()使用说明. Answer: Length():public int length()//求字符串长度,返回字符串长度 String s="dwfsdfwfsadf"; System.out.println(s.length()); charAt():public cha…

hihocoder #1059 :String Matching Content Length 时间限制:10000ms 单点时限:1000ms 内存限制:256MB 描述 We define the matching contents in the strings of strA and strB as common substrings of the two strings. There are two additional restrictions on the common substr…

代码: package fixsizestring; public class TestClass { public static void main(String[] args) { for(int i=0;i<10;i++) { System.out.println(fixSizeStr("#"+i,10)+fixSizeStr("abcdefg",10)+fixSizeStr("北32京32",10)+fixSizeStr("…

[227] Basic Calculator II [Medium] 实现一个简单的计算器,可以+,-,*,/. 用一个数组存数, 遇到+, - 就放进数组 : 遇到 *, / 就先计算好,再放进数组. 用char op存当前数之前的运算符. //author: Wanying Zhang class Solution { public: int calculate(string s) { ; ; vector<int> tmp; char op = '+'; //op marks pre o…

答:数组和string都没有Length()方法,只有Length属性.…

Implement atoi to convert a string to an integer. Hint: Carefully consider all possible input cases. Notes: It is intended for this problem to be specified vaguely (ie, no given input specs). You are responsible to gather all the input requirements u…

场景1:判断类型 r ${d} set variable \xba\xcb\xbc\xf5\xcd\xa8\xb9\xfd #核减通过 Run Keyword And Continue On Failure should be byte string ${d} should be string ${d} Should Be Unicode String ${d} Run Keyword And Continue On Failure Should Not Be String ${d} ${e}…

数组有没有length()这个方法?String有没有length()这个方法? 解答:数组没有length()方法 它有length属性 String有length()方法.…

LeetCode--Reverse String Question Write a function that takes a string as input and returns the string reversed. Example: Given s = "hello", return "olleh". Answer class Solution { public: string reverseString(string s) { string str(s.…

rObjBuff = "".join(unpack('=%ds' % ObjLen, recv_buf[6+i*ObjLen:6+(i+1)*ObjLen]))score, bbox1, bbox2, bbox3, bbox4, p00, p01, p10, p11, p20, p21, p30, p31, p40, p41 = unpack('=5f10H', rObjBuff) 错误示例: rObjBuff = unpack('=%ds' % ObjLen, recv_buf[6+…

string 中的 length函数 和 size函数 的返回值  (  还有 char [ ] 中 测量字符串的  strlen 函数 ) 应该是 unsigned int 类型的 不可以 和 -1 比较. 应尽量避免 unsigned int 类型 和 int类型 数据 的比较 . 当unsigned int 类型 和 int类型 数据 比较 时 ,会 把int 类型 转换 为 unsigned int类型 .如果 int是负数 ,转换 为 unsigned int 会是 一个 很大 的正整…

这是小川的第411次更新,第443篇原创 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第262题(顺位题号是1160).你会得到一个字符串单词数组和一个字符串chars.如果字符串可以由字符中的字符组成(每个字符只能使用一次),则该字符串是好的.返回所有好的字符串的长度之和. 例如: 输入:words = ["cat","bt","hat","tree"],chars ="atach" 输…

/// <summary> /// 用于截取指定长度的字符串内容 /// </summary> /// <param name="sString">用于截取的字符串</param> /// <param name="nLength">截取字符串的长度</param> /// <returns>返回截取后的字符串</returns> public string SubStr…

(该字符串可以包含空格和回车!) [题目要求] 编写一个递归函数,实现将输入的任意长度的字符串反向输出的功能. 例如输入字符串:ABCD,输出字符串:DCBA. [题目分析] 应用递归的思想有时可以很轻松地解决一些看似不太容易实现的功能. 本题就是利用递归方法解决这类问题的一个代表.要将一个字符串反向地输出,一般采用的方法是将该字符串存放到一个数组中,然后将数组元素反向地输出即可. 这样需要一个存储空间,而且字符串的长度无法自由掌握,因为数组是一种静态数据结构.如果选用动态生成的顺序表或者链表来…

产生这个问题的原因是将Substring方法将双字节的汉字当成一个字节的字符(UCS2字符)处理了,导致长度变短. 两个扩展方法按字节长度截取字符串 /// <summary> /// 根据字节长度来截取字符串 /// </summary> ///<param name="origStr">原始字符串</param> ///<param name="length">提取前length个字节</para…

这几天学习分析声音的波形数据,接收到的是十六进制的数据,需要将数据转换成十进制再绘图,这个过程涉及到字符串的分割,正好可以促进自己对C#相关知识的学习.说到分割字符串,我首先想到的是Split,但根据本例分割要求无法直接使用,需要进行一些处理.通过比较,我觉得常用于截取字符串的substring函数可以较方便的解决该问题,故记录下来方便与大家交流.学习.(相信一定有更好的处理方法,希望各位不吝赐教) 一.该程序的主要目的/功能 原数据如下图所示(十六进制数据): 原数据4byte表示一个数(即图…