StairCase | HackerRank Solution in JavaScript

Christotle Agholor — Tue, 25 Oct 2022 19:48:45 +0000

Let's look at the Problem Statement :

Input Format
A single integer, n, denoting the size of the staircase.

Constraints: 0 < n <= 100

Output Format :

Print a staircase of size using # symbols and spaces.

Note: The last line must have spaces in it.

Example:
Sample Input : 4

Sample output

   #
  ##
 ###
####

Solution 1. in JavaScript.

function staircase(n) {
    // Write your code here
    let str = '';
    for(let i = 1; i < n + 1; i++) {
        str += Array(n - i).fill(' ').join('')
        str += Array(i).fill('#').join('')
        console.log(str)
        str = ''
    }

}

Solution 2. in JavaScript.

function staircase(n) {
  for (let i = 0; i < n; i++) {
    let str = Array(i + 1)
      .fill("#")
      .join("")
      .padStart(n);
    console.log(str);
  }
}

// without the padStart it will still give same result.

function staircase(n) {
  for (let i = 0; i < n; i++) {
    let str = Array(i + 1)
      .fill("#")
      .join("")
     console.log(str);
  }
}

but in this case, the element flows to the left

#
##
###
####

DEV Community: Christotle Agholor

StairCase | HackerRank Solution in JavaScript