JAVASCRIPT

how to make stairs in javascript

penWidth(20);
for (var count = 0; count < 6; count++) {
  moveForward(50);
  turnRight(90);
  moveForward(50);
  turnLeft(90);
}

js stairs algorithm

function staircase(n) {
    let filledArray = new Array(n).fill(' ');
    while (filledArray.indexOf(' ') !== -1) {
        filledArray.shift();
        filledArray.push('#');
        console.log(filledArray.join(""));
        n--;
    }
}

Climbing Stairs Problem (JS)

var climbStairs = function(n) {
    if (n == 1 || n == 0) return 1 // our base cases

    let first = 1;
    let second = 2;

    for (let i = 3; i <= n; i++) {
        let third = first + second;
        first = second;
        second = third;
    }
    return second;

};