Работа с файлом

text.rb

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+require 'csv'
+
+class Text
+
+	def opens()
+		@fh = open "test.csv"
+    		@mas = []
+    		while (line = @fh.gets) 
+       			@mas.insert(@mas.length, line.to_f) 
+    		end
+    		@fh.close
+		return @mas
+	end
+
+	def choice()
+		puts "Enter what you need to count (x-max, n-min, a-average, d-dispersion)"
+		@n = gets.chomp
+	end
+
+	def match()
+
+		@avr = @mas.reduce(:+) / @mas.length
+		@dis = 0
+		case @n
+		when "x"
+			@mas.max
+		when "n"
+			@mas.min
+		when "a"
+			@avr
+		when "d"			
+			@mas.each do |i|
+				@dis = @dis + (i - @avr) * 2
+			end
+			@dis / (@mas.length - 1)
+		end
+	end
+
+	def out
+		puts match
+	end
+
+end
+
+txt = Text.new
+txt.opens
+txt.choice
+txt.match
+txt.out
+