2ba3bf09a0 2013-05-11        kinaba: STDERR.print "Number of nodes? "
2ba3bf09a0 2013-05-11        kinaba: V = gets.to_i
2ba3bf09a0 2013-05-11        kinaba: 
2ba3bf09a0 2013-05-11        kinaba: STDERR.print "Directed (u/d)? "
2ba3bf09a0 2013-05-11        kinaba: D = (gets.chomp.downcase=="d");
2ba3bf09a0 2013-05-11        kinaba: 
2ba3bf09a0 2013-05-11        kinaba: ES = []
2ba3bf09a0 2013-05-11        kinaba: loop do
2ba3bf09a0 2013-05-11        kinaba: 	STDERR.print "Edge (u v)? "
2ba3bf09a0 2013-05-11        kinaba: 	edge = gets.split.map(&:to_i)
2ba3bf09a0 2013-05-11        kinaba: 	break if edge.size==0
2ba3bf09a0 2013-05-11        kinaba: 	ES << edge
2ba3bf09a0 2013-05-11        kinaba: end
2ba3bf09a0 2013-05-11        kinaba: 
2ba3bf09a0 2013-05-11        kinaba: V.times do |y|
2ba3bf09a0 2013-05-11        kinaba: 	puts (0...V).map{|x|
2ba3bf09a0 2013-05-11        kinaba: 		(D ? ES.index([y,x]) : ES.index([y,x]) || ES.index([x,y])) ? "Y" : "N"
2ba3bf09a0 2013-05-11        kinaba: 	}*""
2ba3bf09a0 2013-05-11        kinaba: end