7.Reverse Integer 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 Note:Assume we are dealing with an environment which could only stor…

7. Reverse Integer 题目描述: 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 Note: Assume we are dealing with an environment which could o…

problem: Reverse digits of an integer. Example1: x = 123, return 321 Example2: x = -123, return -321 thinking: (1)整型反转直观非常easy理解. 如正负,尾数为0等问题还优点理. (2)反转溢出问题要细致处理. code: class Solution { public: int reverse(int x) { long long int y=x; bool flag=true;…

题目: 数字翻转,即输入123,返回321:输入-123,返回-321. 代码: class Solution { public: int reverse(int x) { , sign = ; ) //负数转换为正数统一处理 { x = -x; sign = -; } ) { result *= ; result += x % ; x /= ; } return result * sign; //返回时记得加上符号 } };…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 公众号:负雪明烛 本文关键词:整数,反转,题解,Leetcode, 力扣,Python, C++, Java 目录 题目描述 题目大意 解题方法 转成字符串 数学 日期 题目地址:https://leetcode.com/problems/reverse-integer/description/ 题目描述 Given a 32-bit signed integer, reverse d…

[Question] Reverse digits of an integer. Example: x = 123, return 321 x = -123, return -321 [My Solution] class Solution(object): def reverse(self, x): """ :type x: int :rtype: int """ neg = 1 if x < 0: neg = -1 if x == 0:…

# -*- coding: utf8 -*-'''__author__ = 'dabay.wang@gmail.com' 25: Reverse Nodes in k-Grouphttps://oj.leetcode.com/problems/reverse-nodes-in-k-group/ Given a linked list, reverse the nodes of a linked list k at a time and return its modified list.If th…

一天一道LeetCode系列 (一)题目 Reverse digits of an integer. Example1: x = 123, return 321 Example2: x = -123, return -321 (二)解题 这题看上去很简单,动笔一挥之下,写出如下代码: class Solution { public: int reverse(int x) { bool flag = false; if(x<0) { x=-k; flag = true; } long result…

这是悦乐书的第143次更新,第145篇原创 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第2题(顺位题号是7),给定32位有符号整数,然后将其反转输出.例如: 输入: 123 输出: 321 输入: -123 输出: -321 输入: 120 输出: 21 给定反转整数范围: [−2^31, 2^31 − 1],即在int的最小值.最大值之间,如果反转整数超过此范围,则返回0. 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,…

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 Note:Assume we are dealing with an environment which could only hold integers within t…