Sha256: 73fc3c07c851b2ada224a6622e2c4d181dbc68b0f1d71610d281753fff280a1e
Contents?: true
Size: 481 Bytes
Versions: 165
Compression:
Stored size: 481 Bytes
Contents
use "collections"
use "itertools"
primitive PascalsTriangle
fun rows(count: USize): Array[Array[USize]] =>
Iter[USize](Range(0, count))
.map[Array[USize]]({(n: USize): Array[USize] => PascalsTriangle.row(n) })
.collect(Array[Array[USize]](count))
fun row(n: USize): Array[USize] =>
let r = Array[USize](n) .> push(1)
for i in Range(1, n + 1) do
try
let last = r(i - 1)?
r.push((last * ((n + 1) - i)) / i)
end
end
r
Version data entries
165 entries across 165 versions & 1 rubygems