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LeetCode 7: Reverse Integer

2015-06-01 23:07 316 查看
Reverse digits of an integer.

Example1: x = 123, return 321

Example2: x = -123, return -321
代码如下:
class Solution {
public:
    int reverse(int x) {
        if (x == -x)
	{
		return 0;
	}
	if (x < 0)
	{
		return -reverse(-x);
	}
	int result = 0;
	int cutoff = INT_MAX;
	int cutlim = cutoff %10;
	cutoff = cutoff /10;
	while (x)
	{
		int tmp = x%10;
		result = 10 * result ;
		result += tmp;
		x = x/10;
		if (result>cutoff && x)
		{
		    result = 0;
			break;
		}
			
	}
	return result;
    }
};
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