Leetcode Problem - Reverse an Integer

Solution of leetcode problem - Reverse an Integer

Suboor Khan
Suboor Khan

Suboor Khan

Software Engineer

JavascriptProblem solving

7. Reverse Integer

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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

 Solution:

const reverseIntger = (num: number) => {
  let rev_num = 0;
  while (num > 0) {
    rev_num = rev_num * 10 + (num % 10);
    num = Math.floor(num / 10);
  }
};


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