https://leetcode.com/problems/reverse-integer/ understanding: 最intuitive的办法就是直接把integer化成string,然后变成list。这里如果化成string,会有溢出的问题,比如integer是1534236469,这个数字反过来就是个很大的数,溢出了,必须返回0. 如果是直接用int计算的,那就会自动溢出得到正确结果。这里如果变成list,则效率底下。
You need to reduce multiple spaces between two words to a single space in the reversed string. Follow up: For C programmers, try to solve itin-placeinO(1) space. 用stack 做 publicclassSolution {publicString reverseWords(String s) {if(s ==null|| s.length() == 0){returns; } Stack<...
LeetCode之Reverse String 1、题目: Write a function that takes a string as input and returns the string reversed. Example: Given s = "hello", return "olleh". 2、代码实现: 代码实现1: public static String reverseString(String s) { if (s == null) { return null; } if (s.lengt...
classSolution{public:// method 1:stringreverseStr1(string s,intk){intsz = s.size();inti =0, j =0;boolflip =true; string res =""; string tmp ="";while(i < sz){while(j < sz && j < i + k){ j++; }if(flip){ tmp = s.substr(i, j-i); tmp =string(tmp.rbegin(), t...
输入:s = "a good example" 输出:"example good a" 解释:如果两个单词间有多余的空格,反转后的字符串需要将单词间的空格减少到仅有一个。 提示: 1 <= s.length <= 104 s 包含英文大小写字母、数字和空格 ' ' s 中至少存在一个 单词 进阶:如果字符串在你使用的编程语言中是一种可变数据类型,请尝试...
Write a function that takes a string as input and reverse only the vowels of a string. Example 1: Givens = "hello", return "holle". Example 2: Givens = "leetcode", return "leotcede". Note 第一种解法:将字符串转化为字符数组,用一头一尾两个指针向中间夹逼,遇到两个元音字母就进行位置交换...
Can you solve this real interview question? Reverse Words in a String III - Given a string s, reverse the order of characters in each word within a sentence while still preserving whitespace and initial word order. Example 1: Input: s = "Let's take
链滴Reverse Words in a String III--leetcode 作者:moloee 原文链接:https://ld246.com/article/1509275957069 来源网站:链滴 许可协议:署名-相同方式共享 4.0 国际 (CC BY-SA 4.0) 题目 Given a string, you need to reverse the order of characters in each word within a sentence whi e still ...
输入:“leetcode” 输出:“leotcede” 注意:元音不包括字母“y”。 本次解题使用的开发工具是eclipse,jdk使用的版本是1.8,环境是win7 64位系统,使用Java语言编写和测试。 02 第一种解法 元音字母包含:a e i o u 这五个,利用栈先进后出的特性,把字符串转为字符数组,利用迭代,遇到五个元音字母(包含大小写...
Write a function that takes a string as input and reverse only the vowels of a string. Example 1: Given s = "hello", return "holle". Example 2: Given s = "leetcode", return "leotcede". Note: The vowels does not include the letter "y". ...