diff options
| -rw-r--r-- | challenge-119/abigail/ruby/ch-2.rb | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/challenge-119/abigail/ruby/ch-2.rb b/challenge-119/abigail/ruby/ch-2.rb new file mode 100644 index 0000000000..55ac672fca --- /dev/null +++ b/challenge-119/abigail/ruby/ch-2.rb @@ -0,0 +1,27 @@ +#!/usr/bin/ruby + +# +# See ../README.md +# + +# +# Run as: ruby ch-2.rb < input-file +# + +def next_num (prev_num) + ("0" + prev_num) . match (/^(.*)([012])(3*)$/) do + |match| + return (match [1] + (1 + match [2] . to_i) . to_s + + match [3] . gsub(/3/, "1")) . gsub(/11/, "12") . gsub(/^0/, "") + end +end + + +ARGF . each_line do + |num| + number = "0" + for i in 1 .. num . to_i do + number = next_num (number) + end + puts (number) +end |