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 store integers within…
问题描述 Example1: x = 123, return 321 Example2: x = -123, return -321 原题链接: https://leetcode.com/problems/reverse-integer/ 解决方案 public int reverse(int x) { long res = 0; //need to consider the overflow problem while(x != 0){ res = res * 10 + x % 10; //…
题目: Reverse digits of an integer. Example1: x = 123, return 321 Example2: x = -123, return -321 思路:不断取最低位加到先前值得后面,如下: while(x!=0){ res=res*10+x%10; x/=10; } 还要注意反转后可能会出现溢出的情况. public class Solution { public int reverse(int x) { long res=0; while(x!=0…
Reverse digits of an integer. Example1: x = 123, return 321Example2: x = -123, return -321 For the purpose of this problem, assume that your function returns 0 when the reversed integer overflows. int reverse(int x) { if(x == INT_MIN){//-2147483648 ;…
题目等级:Easy 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 题意:给出一个 32 位的有符号整数,你需要将这个整数中每位上的数字进行反转. 解题思路: 本题很简单,我们给出以下两种方法. …
题目来源:https://leetcode.com/problems/reverse-integer/ Reverse digits of an integer. Example1: x = 123, return 321Example2: x = -123, return -321 解题思路: 其实这道题看起来非常简单,要实现也是几行代码的事.但是有个小问题容易被忽略,就是边界问题.什么意思呢?如果我们输入的整数超出了int的表达范围,这个问题要怎么解决呢? 用比int更大的数据类型存储我们转…
Reverse Integer Reverse digits of an integer. Example1: x = 123, return 321Example2: x = -123, return -321 若反转的数溢出,直接返回0 可以用计算结果来判断溢出,也可以用因数来判断 Java代码实现: public class ReverseInteger { public static int reverseInt(int x){ if (x == 0) { return 0; } int…