Binary Gap Exercise from Codility (JavaScript/NodeJS)

BinaryGap.js

/**
 * Function which calculates the binary gap of the integer N
 * @param {int} N
 * @return {int} result
 */

function solution(N) {
    // Convert decimal to binary
    let binary = (N >>> 0).toString(2)
    
    // Check if Regex matched results (array is not null)
    let arrOfZeros = binary.match(/(?!1)(0+)/g)
    
    // Then sort the array based on item length
    // Return first entry (longest)
    // Or return 0 if array is empty/null
    let result = (arrOfZeros) ? arrOfZeros.sort((a, b) => a.length < b.length)[0].length : 0
    
    return result
}