// Floyd's triangle is a right-angled triangular of natural numbers
fun main() {
val rows = 8
var n = 1
for (i in 1..rows) {
var s = ""
for (j in 1..i) {
s += "$n "
n++
}
println(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
*/