binaryGap.js

function solution(N) {
    // Convert number to a binary string
    const binString = (N >>>0).toString(2)

    // Remove trailing zeros from the string
    while(binString.slice(-1) === "0") {
        binString = binString.slice(0,-1)
    }
 
    // Get gaps array by using split(1) then remove "" from the array
    const gaps = binString.split(1).filter(e => e !== "")
    
    // Return 0 if no binary gap found
    if(gaps.length == 0) { 
        return 0
    }

    // Get the maximum length of gaps in gaps array 
    const lengthestGap = gaps.sort((x,y) => y.length - x.length)[0]
    
    // Then return the length
    return lengthestGap.length
}