翻转字符串 先把字符串转化成数组,再借助数组的reverse方法翻转数组顺序,最后把数组转化成字符串. 你的结果必须得是一个字符串 这是一些对你有帮助的资源: Global String Object String.split() Array.reverse() Array.join() 1 2 3 function reverseString(str) {   return str.split('').reverse().join(''); } 这里用到了一个字符串方法和两个数组方法,spli…

题目:Given an input string, reverse the string word by word. For example,Given s = "the sky is blue",return "blue is sky the". 要求: 1)首尾有空格的时候,反转后的string要将空格去掉 2)当string有多个连续空格的时候,只保留一个空格. 代码分析: 对多余空格剔除: 思路分析: 1)从原始s 的最末尾开始扫描,如果遇到空格,用whil…

problem: Given an input string, reverse the string word by word. For example: Given s = "the sky is blue", return "blue is sky the". 问题分析:如何准确的找到每一个需要清除的空格的位置pos,以及每个word对应的pos范围? 解决方法:需要反转一个字符串,使用int string.find_last_not_of(char c, in…

7 - Reverse digits of an integer. Example1: x = 123, return 321Example2: x = -123, return -321 Notice: 1.If the integer's last digit is 0, what should the output be? ie, cases such as 10, 100. 2.Did you notice that the reversed integer might overflow…

[Q7]  把数倒过来 Given a 32-bit signed integer, reverse digits of an integer. Example 1: Input: 123 Output: 321 Example 2: Input: -123 Output: -321 Example 3: Input: 120 Output: 21 Solution: https://leetcode.com/problems/reverse-integer/discuss/229800/Pyt…

题目: 翻转字符串 先把字符串转化成数组,再借助数组的reverse方法翻转数组顺序,最后把数组转化成字符串. 你的结果必须得是一个字符串 这是一些对你有帮助的资源: Global String Object String.split() Array.reverse() Array.join() function reverseString(str) { return str.split('').reverse().join(''); } 这里用到了一个字符串方法和两个数组方法,split()方…

今天的两道题关于基本数据类型的探讨,估计也是要考虑各种情况,要细致学习 7. Reverse Integer Reverse digits of an integer. Example1: x = 123, return 321 Example2: x = -123, return -321 Have you thought about this? Here are some good questions to ask before coding. Bonus points for you if…

题目描述: 先把字符串转化成数组,再借助数组的reverse方法翻转数组顺序,最后把数组转化成字符串.你的结果必须得是一个字符串. 算法: function reverseString(str) { // 请把你的代码写在这里 str = str.split("").reverse().join(""); return str; } reverseString("hello");…

Given an input string, reverse the string word by word. A word is defined as a sequence of non-space characters.The input string does not contain leading or trailing spaces and the words are always separated by a single space.For example,Given s = "t…

Given an input string, reverse the string word by word. For example, Given s = "the sky is blue", return "blue is sky the". Update (2015-02-12): For C programmers: Try to solve it in-place in O(1) space. click to show clarification. Cl…