2015-10: Blaise'ing a Trail
The APL expression to compute Pascal's triangle of order n is fairly simple.
{{⍉⍵∘.!⍵}0,⍳⍵} 10
1 0 0 0 0 0 0 0 0 0 0
1 1 0 0 0 0 0 0 0 0 0
1 2 1 0 0 0 0 0 0 0 0
1 3 3 1 0 0 0 0 0 0 0
1 4 6 4 1 0 0 0 0 0 0
1 5 10 10 5 1 0 0 0 0 0
1 6 15 20 15 6 1 0 0 0 0
1 7 21 35 35 21 7 1 0 0 0
1 8 28 56 70 56 28 8 1 0 0
1 9 36 84 126 126 84 36 9 1 0
1 10 45 120 210 252 210 120 45 10 1
However, the output leaves something to be desired. Write a function that takes an integer right argument representing the order of the Pascal's triangle to be created and returns a "nicely" formatted character matrix. Because we're using a mono-spaced font and can only format whole character positions, lines do not have to be perfectly centered and may vary by a character position.
Examples:
(your_function) 10
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1
1 6 15 20 15 6 1
1 7 21 35 35 21 7 1
1 8 28 56 70 56 28 8 1
1 9 36 84 126 126 84 36 9 1
1 10 45 120 210 252 210 120 45 10 1
(your_function) 1
1
1 1
(your_function) 0
1
your_function ←
Solutions
