JS Algorithm – Steps

Write a function that accepts a positive number N. The function should console log a step shape with N levels using the # character. Make sure the step has spaces on the right hand side!

Examples
steps(2)
‘# ‘
‘##’
steps(3)
‘# ‘
‘## ‘
‘###’
steps(4)
‘# ‘
‘## ‘
‘### ‘
‘####’

First Solution

function steps(n) {
  // Go through every row
  for (let row = 0; row < n; row++) {
    // stair variable declaration in every
    // cycle the row
    let stair = '';

    // Go through every column (of each row)
    for (column = 0; column < n; column++) {
      // codition to insert or not the #
      if (column <= row) {
        stair += '#';
      } else {
        stair += ' ';
      }
    }

    // After the loop of column finish
    // console the stair that contains the string
    console.log(stair);
  }
}

steps(3);

Result:

Second solution

// Function declaration with
// needed parameters
function steps(n, row = 0, stair = '') {

  // If n is equal to 0 then the program end
  if (n === row) {
    return;
  }

  // If n is equal to stair (string) length
  // this will mean that we need to get the next row
  if (n === stair.length) {

    // print the stair string
    console.log(stair);

    // Call the same function again
    // go through the next row
    return steps(n, row + 1);
  }

  // If stair (string) length is less than row
  if (stair.length <= row) {
    // then add # to stair (string)
    stair += '#';
  } else {
    // else add empty space to stair (string)
    stair += ' ';
  }


  // Call the same function again
  steps(n, row, stair);
}

steps(3);

Result:

By Cristina Rojas