1.题目 12. Integer to Roman Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. Symbol Value I 1 V 5 X 10 L 50 C 100 D 500 M 1000 For example, two is written as II in Roman numeral, just two one's added together. Twelve i…

12.Integer to Roman Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. 拿到题目,分析,比较简单,除掉相应的基数单位,拼接起来就可以,不过要注意4,9这些特殊的表示. 先上我的代码吧: public String intToRoman(int num){ StringBuffer sb=new StringBuff…

12. Integer to Roman Medium Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. Symbol Value I 1 V 5 X 10 L 50 C 100 D 500 M 1000 For example, two is written as II in Roman numeral, just two one's added together. Twelve…

乘风破浪:LeetCode真题_007_Reverse Integer 一.前言 这是一个比较简单的问题了,将整数翻转,主要考察了取整和取余,以及灵活地使用long型变量防止越界的问题. 二.Reverse Integer 2.1 问题理解 2.2 问题分析与解决    可以看到通过简单地取整和取余运算就能得到答案,但是需要注意越界问题,使用long在Java中8个字节的特性来完成越界检查和处理.    我们的算法: public class Solution { /** * <pre> *…

我现在在做一个叫<leetbook>的免费开源书项目,力求提供最易懂的中文思路,目前把解题思路都同步更新到gitbook上了,需要的同学可以去看看 书的地址:https://hk029.gitbooks.io/leetbook/ 012. Integer to Roman[M] 问题 Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999…

Integer to Roman Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. 逐区间做处理. 解法一:非递归 class Solution { public: string intToRoman(int num) { string ret; //M<-->1000 ) { ret += 'M'; num -= ; } //t…

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,…

1.题目13. Roman to Integer Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. Symbol Value I 1 V 5 X 10 L 50 C 100 D 500 M 1000 For example, two is written as II in Roman numeral, just two one's added together. Twelve is…

Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. Symbol Value I 1 V 5 X 10 L 50 C 100 D 500 M 1000 For example, two is written as II in Roman numeral, just two one's added together. Twelve is written as, XII, which i…

作者: 负雪明烛 id: fuxuemingzhu 个人博客:http://fuxuemingzhu.cn/ 个人公众号:负雪明烛 本文关键词:roman, 罗马数字,题解,leetcode, 力扣,Python, C++, Java 目录 题目描述 题目大意 解题方法 日期 题目描述 Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. Symbol Value I 1 V 5 X…