#1812 - Determine Color of a Chessboard Square

Easy • View on LeetCode • View on GitHub

Problem Description

You are given coordinates, a string that represents the coordinates of a square of the chessboard. Below is a chessboard for your reference.

Return true if the square is white, and false if the square is black.

The coordinate will always represent a valid chessboard square. The coordinate will always have the letter first, and the number second.

Solution

/**
 * @param {string} coordinates
 * @return {boolean}
 */
var squareIsWhite = function(coordinates) {
  const [x, y] = coordinates;
  return (x.charCodeAt() + +y) % 2 !== 0;
};