Reverse String(反转字符串) 题目描述 LeetCode 344. 反转字符串 请编写一个函数,其功能是将输入的字符串反转过来。 示例 输入: s = "hello" 返回: "olleh" Java 解答...Leetcode 344:Reverse String 反转字符串(python、java) Leetcode 344:Reverse String 反转字符串 公众号:爱写bug Write a function...
LeetCode C++ 541. Reverse String II【String】简单 Given a string and an integerk, you need to reverse the firstkcharacters for every2kcharacters counting from the start of the string. If there are less thankcharacters left, reverse all of them. If there are less than2kbut greater than or...
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 equal to k characters, then reverse...
转成字符串: a. 双向队列 b. 双指针 不转字符串: a. 模拟字符串的双向队列(使用math库的log函数 获取整数的位数) b. 反转后面一半的整数(使用math库的log函数 获取整数的位数) c. 反转后面一半的整数(不适用log函数) (通过原整数x 与 reverse_x 的大小判断) 复杂度分析 时间复杂度:O(\log n)O(logn...
The string consists of lower English letters only. Length of the given string and k will in the range [1, 10000] 这道题是之前那道题Reverse String的拓展,同样是翻转字符串,但是这里是每隔k隔字符,翻转k个字符,最后如果不够k个了的话,剩几个就翻转几个。比较直接的方法就是先用n/k算出来原字符串...
#include <cmath> using namespace std; class Solution { public: string reverseStr(string s, int k) { int count = s.length() / k; for (int i = 0; i <= count; i++) { if (i % 2 == 0) { if (i*k + k < s.length()) ...
Follow up: For C programmers, try to solve itin-placeinO(1) space. 先把整个数组reverse一下再逐个reverse单词。 具体采用two pointer 和 swap 的方法来reverse。 publicclassSolution {publicString reverseWords(String s) {if(s ==null)returnnull;char[] a =s.toCharArray();intn =s.length();//...
Given an input string,reverse the string word by word.For example,Given s="the sky is blue",return"blue is sky the". 比较基础的一个题,拿到这个题,我的第一想法是利用vector来存每一个子串,然后在输出,这是一个比较简单的思路,此外,还有第二个思路,就是对所有的字符反转,然后在针对每一个子串反转...
* ListNode(int x, ListNode *next) : val(x), next(next) {} * }; */ classSolution{ public: ListNode*reverseList(ListNode*head) { } }; 已存储 行1,列 1 运行和提交代码需要登录 Case 1Case 2Case 3 head = [1,2,3,4,5] 9 1 2 3 › [1,2,3,4,5] [1,2] [] Source...
leetcode 151. Reverse Words in a String 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 ......