CareerCup

function zeros(arr) {
    let start = 0;
    let end = 0;
    while (end < arr.length) {
        if (arr[start] === 0 && arr[end] !== 0) {
            arr[start] = arr[end];
            arr[end] = 0;
            start++;
        }

        if (arr[end] !== 0) {
            start++;
        }

        end++;
    }
}

var r = [1,2,0,0,0,4,0,0,0,8,9,10];
zeros(r);
console.log('zeros', r);

eval('3*5+8')

const obj = {};
["geeks", "for", "geeks", "a", "portal", "to", "learn", "can", "be", "computer", "science", "zoom", "yup", "fire", "in", "be", "data", "geeks"].forEach(item => {
    if(obj[item] === undefined) {
        obj[item] = 1;
    } else {
        obj[item]++;
    }
});
Object.entries(obj).sort((a, b) => a[1] - b[1]).slice(-2).reduce((arr, item) => {
    arr.push(item[0]);
    return arr;
}, []);

JavaScript

function isPeriodic(str) {
    f: for (let i = 0; i <= str.length / 2; i += 1) {
    window.P = str.substring(0, i);
    if (!window.P) {
        continue;
    }
    for (let x = 0; x < str.length; x += window.P.length) {
        const currentPattern = str.substr(x, window.P.length);
        if (currentPattern !== window.P) {
            break;
        } else if (x + window.P.length === str.length) {
            console.log('RESULT', window.P, str.length / window.P.length);
            break f;
        }
    }
}
}