trying to make an asterisk triangle in Swift using a while loop - swift

Question

I'm trying to make tan asterisk triangle output in Swift. I HAVE to use a while loop.
I have tried doing a while loop by it's self - no luck
I think I need to nest a while loop with a for loop but not even sure I can do that. Or I may be making this way harder than it needs to be :). Super new to programming...I simply do not know how to add an"*" in the while loop. below is the latest code that I have tried but it's wrong(obviously) any help would be appreciated
let rows = 5
for i in 1...rows{
for j in 1...i{
print("\(j) ", terminator: "")
}
var num_stars = 1
while num_stars <= 5{
print(num_stars)
num_stars += 1
}
print("")
}

Answer 1

Simply :
let rows = 5
var i = 1
while i <= rows {
print(String(repeating: "*", count: i))
i += 1
}
which outputs :
*
**
***
****
*****
This looks prettier to me :
let rows = 5
var i = 0
while i < rows {
let spaces = String(repeating: " ", count: rows - i - 1)
let stars = String(repeating: "*", count: 2 * i + 1)
print(spaces + stars)
i += 1
}
*
***
*****
*******
*********
Or :
while i < rows {
let spaces = String(repeating: " ", count: rows - i - 1)
print(spaces, terminator: "")
if i > 0 {
print("*", terminator: "")
if i < rows - 1 {
let insideTriangleSpaces = String(repeating: " ", count: 2 * (i - 1) + 1)
print(insideTriangleSpaces, terminator: "")
} else {
let insideTriangleStars = String(repeating: "*", count: 2 * (i - 1) + 1)
print(insideTriangleStars, terminator: "")
}
}
print("*")
i += 1
}
*
* *
* *
* *
*********