Chess Board Cell Color

Description

Given two cells on the standard chess board, determine whether they have the same color or not.

Example

For cell1 = "A1" and cell2 = "C3", the output should be chessBoardCellColor(cell1, cell2) = true.

For cell1 = "A1" and cell2 = "H3", the output should be chessBoardCellColor(cell1, cell2) = false.

Input/Output

[execution time limit] 4 seconds (js)
[input] string cell1
[input] string cell2
[output] boolean

true if both cells have the same color, false otherwise.

[JavaScript (ES6)] Syntax Tips

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// Prints help message to the console
// Returns a string
function helloWorld(name) {
    console.log("This prints to the console when you Run Tests");
    return "Hello, " + name;
}

Solution

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function chessBoardCellColor(cell1, cell2) {
    return cell1.split('').reduce((a,b)=> 
                                  Math.abs(a.charCodeAt(0) - 'A'.charCodeAt(0) + 1 - b)%2)  === cell2.split('').reduce((a,b)=> 
                                  Math.abs(a.charCodeAt(0) - 'A'.charCodeAt(0) + 1 - b)%2)
}