Question

How to print Floyd's triangle in Swift

Answer 1

// Floyd's triangle is a right-angled triangular of natural numbers

import Foundation

let rows = 8
var n = 1

for i in 1...rows {
    var s = ""
    for _ in 1...i {
        s += "\(n) "
        n += 1
    }
    print(s)
}


 
 
/*
run:
 
1 
2 3 
4 5 6 
7 8 9 10 
11 12 13 14 15 
16 17 18 19 20 21 
22 23 24 25 26 27 28 
29 30 31 32 33 34 35 36 
 
*/

 

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