Exercise 3: Integer Reversal

Directions

Given an integer, return an integer that is the reverse ordering of numbers.

Examples

reverseInt(15) === 51
  reverseInt(981) === 189
  reverseInt(500) === 5
  reverseInt(-15) === -51
  reverseInt(-90) === -9

Guidelines

The input and output should be a number, not a string Math.sign(), Number.prototype.toString(), Global.parseInt()

Solution

function reverseInt(n) {
  let result = parseInt(n.toString().split("").reverse().join(""));
  return result * Math.sign(n);
}

reverseInt(15)

51

reverseInt(981)

189

reverseInt(500)

5

reverseInt(-15)

-51

reverseInt(-90)

-9