dsa-competitive-programming/leetcode/lc7/RevInt.cpp

class Solution {
public:
    int reverse(int x) {
       int rev =0;
       while(x!=0){
        int digit = x%10;
        x/=10;
        if(rev>INT_MAX/10 || rev==INT_MAX/10 && digit > 7){
            return 0;
        }
        if(rev<INT_MIN/10 || rev==INT_MIN/10 && digit < -8){
            return 0;
        }
        rev  = rev*10 + digit;

       }
       return rev;

    }
};