Изменение текста

izm=Hash.new
izm["A"]="n"
izm["B"]="h"
izm["C"]="Y"
 
p_text=""
File.open("file.txt", "r").each_line do |line|
p_text+=line
end
c_text=""
p_text.each_char|simvol|
if izm.has_key?(simvol)
c_text+=izn[simvol]
else
c_text+=simvol
end
end
File.open("p.txt", "w") do |file|
file.puts c_text
end

p_text=""
File.open("file.txt", "r").each_line do |line|
p_text+=line
end
c_text=""
p_text.each_char |simvol|
if izm.has_key?(simvol)
c_text+=izn[simvol]
else
c_text+=simvol
end
end
File.open("p.txt", "w") do |file|
file.puts c_text
end

if shifrator.has_key?(simvol)
c_text+=shifrator[simvol]
else
c_text+=simvol
end

p_text=""
File.open('file.txt', "r").each_line do |line|
  p_text+=line
end
c_text=""
p_text.each_char do |simvol|
  if izm.has_key?(simvol)
    c_text+=izm[simvol]
  else
    c_text+=simvol
  end
end
File.open('london.txt', "w") do |file|
  file.puts c_text
end