reversedSquare

reversedSquare.js

const reverseNumber = (number) => parseFloat(number.toString().split('').reverse().join('')) * Math.sign(number);

const reversedSquare = (number) => {
  if (isNaN(number)) return 'Not a number';
  // A negative number cannot be a perfect square so there is no need to calculate this.
  if (number >= 0) {
    const reversedNumber = reverseNumber(number);
    const squareRoot = Math.sqrt(number);
    const reversedRoot = Math.sqrt(reversedNumber);
    return ((squareRoot * squareRoot) === number && (reversedRoot * reversedRoot) === reversedNumber);
  }
  return false;
}