Find longest sequence of zeros in binary representation of an integer. Ref: https://app.codility.com/programmers/lessons/1-iterations/ . Codepen: https://codepen.io/yussan/pen/wQzqbw?editors=1011

Codelity-BinaryGap.js

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(N) {
    // write your code in JavaScript (Node.js 8.9.4)
    const bin = Math.abs(N).toString(2)
    let maxGap = 0, currentGap = 0
    
    for(let n=0;n<bin.length;n++) {
        if(bin[n]=="0"){
            currentGap++
        }
        
        if(bin[n]=="1" && n !=0 ){
            maxGap = Math.max(maxGap, currentGap)
            currentGap = 0
        }
    }
    
    return parseInt(maxGap)
}