Reverse Integer (DSA)

 #dsa #leetcode #problem_solving

Given a signed 32-bit integer x, return x with its digits reversed. If reversing x causes the value to go outside the signed 32-bit integer range [-231, 231 - 1], then return 0.

Assume the environment does not allow you to store 64-bit integers (signed or unsigned).

Example 1:

Input: x = 123
Output: 321

Example 2:

Input: x = -123
Output: -321

Example 3:

Input: x = 120
Output: 21

class Solution {

public:

    int reverse(int x) {

        int num=0, temp;

    for(int i=x; i!=0; i=i/10)

    { temp=i%10;

        if ((num > INT_MAX/10)|| (num < INT_MIN/10))

        return 0;

      num= (num*10) + temp;

    }

    return num;

    }

};