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,反过来是 -421 等等。 先看题目: 解法1:字符串反转 ## 解法一:转换为字符串,要考虑溢出 ## 特殊的案例:< 2**31-1 class Solution: ...
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_MIN =2...
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...
Integer.valueOf(sb.toString()):-Integer.valueOf(sb.toString()); }catch(Exception e){return0; } } }classSolution{publicintreverse(intx){char[] s = Integer.toString(x).toCharArray();intf=0,b = s.length-1;Stringstring="";if(s[f] =='-') { string +='-'; ++f; }while(b >=0...
leetcode——Reverse Integer 前言 leetcode的刷题记录,整理思路和一些理论细节。 Question 给出一个32比特大小的整数,对其逆序。 Example 1: Input: 123 Output: 321 Example 2: Input: -123 Output: -321 Example 3: Input: 120 Output: 21 Note:...
Leecode reverse-integer 题目描述 将给出的整数x翻转。 例1:x=123,返回321 例2:x=-123,返回-321 你有思考过下面的这些问题么? 如果整数的最后一位是0,那么输出应该是什么?比如10,100 你注意到翻转后的整数可能溢出吗?假设输入是32位整数,则将翻转10000000003就会溢出,你该怎么处理这样的样例?抛出异常?这样...
The input is assumed to be a 32-bit signed integer. Your function shouldreturn 0 when the reversed integer overflows. Subscribeto see which companies asked this question. 2、代码实现 代码实现1、 通过不了LeetCode 代码解读 public static int reverse(int x) { ...
LeetCode Reverse Integer Reverse Integer Total Accepted: 61132 Total Submissions: 219035 My Submissions Question Solution Reverse digits of an integer. Example1: x = 123, return 321 Example2: x = -123, return -321 click to show spoilers....
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1 题目 Given a 32-bit signed integer, reverse digits of an integer. Example 1: Input:123Output:321 Example 2: Input:-123Output:-321 Example 3: Input:120Output:21 Note: Assume we are dealing with an environment which could only store integers within the 32-bit signed integer range: [...