select_from


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

#!/usr/bin/env ruby

require 'zipf'

accept = {}

f = ReadFile.new ARGV[0]
f.readlines_strip.each { |line|
  accept[line.strip.to_i] = true
}

i = 0
while line = STDIN.gets
  if accept[i]
    STDOUT.write line
  end
  i += 1
end