Reverse Integer(LeetCode)

文章目录

1. 1. Question:Reverse Integer
2. 2. SourceCode:
   1. 2.1. s1
   2. 2.2. s2

Question:Reverse Integer

Reverse digits of an integer.

Example1: x = 123, return 321

Example2: x = -123, return -321

SourceCode:

s1

//笔者提交版本；耗时：6ms；

public class Solution {
    public int reverse(int x) {
        int tmpNum = Math.abs(x);
        StringBuilder tmpStr = new StringBuilder(String.valueOf(tmpNum));
        String result = (String)(x > 0 ? tmpStr.reverse().toString() : "-"+tmpStr.reverse().toString());
        
        int re =0;
		
		//边界控制
        try {
        	re =Integer.parseInt(result);
		} catch (Exception e) {
			// TODO: handle exception
		}
        
        return re;
    }
}

s2

//该版本参考了Discuss,还没看Discuss；耗时：ms；
//待写