LeetCode 7题的要求是:给定一个32位的整数,将它的数字翻转。 例如,输入 123,输出 321;输入 -123,输出 -321;输入 120,输出 21。 注意两点: 如果翻转后的数字超过32位整数范围,则返回0。 要保留负号,但忽略原数字的任何前导零(比如120翻转后是21,而不是021)。 解题要点: 32 位数字的范围: INT_MAX, INT
解法1:字符串反转 解法2:数学运算(求余)转换 解法3:递归解法 这个题其实是 LeetCode 9 的基础题。可见,LeetCode 的题目编排就是乱来。 不过呢,相对 LeetCode 9,此题存在一些小的细节必须考虑周全。 题目要求看上去很简单,就是把一个整数从右到左翻过来。比如5,翻过来还是5;123,翻过来就是 321;-124,反过...
If the integer's last digit is 0, what should the output be? ie, cases such as 10, 100. Did you notice that the reversed integer might overflow? Assume the input is a 32-bit integer, then the reverse of 1000000003 overflows. How should you handle such cases? Throw an exception? Goo...
Here are some good questions to ask before coding. Bonus points for you if you have already thought through this! If the integer's last digit is 0, what should the output be? ie, cases such as 10, 100. Did you notice that the reversed integer might overflow? Assume the input is a ...
AC Code publicclassSolution{publicintreverse(intx){//1259if(x==Integer.MIN_VALUE){return0;//Integer.MIN_VALUE is -2^31, the abs of which is larger than Integer.MAX_VALUE(2^31 - 1)}intposx=Math.abs(x);intres=0;while(posx!=0){intrem=posx%10;//see whether res * 10 + posx...
Leetcode: Reverse Integer 题目: Reverse digits of an integer. Example1: x = 123, return 321 Example2: x = -123, return -321 题目提示: Have you thought about this? Here are some good questions to ask before coding. Bonus points for you if you have already thought through this!
7. Reverse Integer(注意越界问题) 【题目】 Given a 32-bit signed integer, reverse digits of an integer. (翻译:给定一个 32 位有符号整数,将整数中的数字进行反转。) Example: 代码语言:javascript 代码运行次数:0 Input:123Output:321Input:-123Output:-321Input:120Output:21...
* 来源:http://oj.leetcode.com/problems/reverse-integer/# * 结果:AC * 来源:LeetCode * 总结: ***/ class Solution { public: int reverse(int x){ int result = 0; for(;x;x/=10){ result = result * 10 + x % 10; } return ...
so we created this collection of integer tools. Our tools have the simplest user interface that doesn't require advanced computer skills and they are used by millions of people every month. Our integer tools are actually powered by ourprogramming toolsthat we created over the last couple of yea...
Reverse Integer returnreverse翻译intinteger leehao2025-02-10 解题思路:这道题目看起来比较简单。无非就是一个数字取个位,作为另一个高位。无非是在10的运算。 6800 python 回文数 多种解法 指针字符串pythonreturnreverse 编程小白狼2024-12-31 解法一:字符串反转 将数字转换为字符串,然后将字符串反转,最后判断反...