LeetCode #7 整数反转

class Solution {
public:
    int reverse(int x) {
        long long y=0;
        int z=x>=0?1:-1;
        while(x){
            y=y*10+x%10;
            x=x/10;
        }
        if(y>2147483647||y<-2147483648){
            y=0;
        }
        return y;
    }
};