[Swift&JS] HackerRank Staircase

 

Problem

 

Staircase | HackerRank

---

Source Code

 

Swift

 

import Foundation

let n:Int = Int(readLine()!)!
var start = Array(repeating:" ", count: n)
func staircase(n: Int) {
    for i in 1...n {
        start[n-i] = "#"
        print(start.joined())
    }
}
staircase(n: n)

 

JS

 

'use strict';

process.stdin.resume();
process.stdin.setEncoding('utf-8');

let inputString = '';
let currentLine = 0;

process.stdin.on('data', function(inputStdin) {
    inputString += inputStdin;
});

process.stdin.on('end', function() {
    inputString = inputString.split('\n');
    main();
});

function readLine() {
    return inputString[currentLine++];
}

function staircase(n) {
    let start = " ".repeat(n).split('')
    for (let i = 1; i <= n; i++) {        
        start[n-i] = "#"
        console.log(start.join(''))
      } 
}

function main() {
    const n = parseInt(readLine().trim(), 10);
    staircase(n);
}