11 lines
388 B
Ruby
11 lines
388 B
Ruby
#Upper, lower, and symetric Pascal Matrix - Nigel Galloway: May 3rd., 21015
|
|
require 'pp'
|
|
|
|
ng = (g = 0..4).collect{[]}
|
|
g.each{|i| g.each{|j| ng[i][j] = i==0 ? 1 : j<i ? 0 : ng[i-1][j-1]+ng[i][j-1]}}
|
|
pp ng; puts
|
|
g.each{|i| g.each{|j| ng[i][j] = j==0 ? 1 : i<j ? 0 : ng[i-1][j-1]+ng[i-1][j]}}
|
|
pp ng; puts
|
|
g.each{|i| g.each{|j| ng[i][j] = (i==0 or j==0) ? 1 : ng[i-1][j ]+ng[i][j-1]}}
|
|
pp ng
|