while loop leccii

function password(input) {
    let username = input[0];
    let password = input[1];
    let data = input[2];
    let index = 3;

    while(data !== password) {
        data = input[index];
        index++;
    }
    console.log(`Welcome ${username}!`);
}

function sequence([arg1]) {
    let n = parseInt(arg1);
    let num = 1;

    while(num <= n) {
        console.log(num);
        num = 2 * num + 1;
    }
}


function numberInRange(args) {
    let i = 0;
    let num = parseInt(args[i]);
    while(num < 1 || num > 100) {
        i++;
        console.log(`Invalid number!`);
        num = parseInt(args[i]);
    }
    console.log(`The number is: ${num}`);
}