Printing Staircase Pattern : Swift coding challenge

In this post, we can try interesting pattern printing challenge in Swift. The problem statement goes like this "Print a staircase of given size 'n'. Make sure that its base and height are both equal to n, and the image is drawn only using `#` symbols and spaces. The last line is not preceded by any spaces."

Expected Output :

	#
	##
	###
	####
	#####
	######

Working solution:

func makePatternOf(_ size: Int) {

var str = ""

// 1

for index in (0..<size) {

let stop = size-index-1;

// 2

for _ in 0..<stop {

str.append(" ");

}

// 3

for _ in 0...index {

str.append("#");

}

print(str)

str = ""

}

}

makePatternOf(6)

1. Loop to visit every row of stair case.
2. Loop for appending spaces until the limit of empty space.
3. Final loop for simply append the # pattern.

We can try couple of other variants like Piramid, Mirrored patterns as bonus challenge.  Thanks for reading & happy coding.