7.Reverse Integer

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 the 32-bit signed integer range: [−231, 231 − 1]. For the purpose of this problem, assume that your function returns 0 when the reversed integer overflows.

C语言实现的代码如下：

int reverse(int x)
{
    int i,j,temp;
    int sum=0;
    int count=0;
    int weight=1;
    long int xxx;
    temp=x;
    while(x!=0)
    {
        x/=10;
        count++;
    }
    for(j=0;j