Mercurial > repos > other > adventofcode2023
annotate day1.rb @ 9:9ec95ff0d33d
Add Day 7 solutions with string sorting
Each hand gets a score based on the ranking, then concats the
card values to get a sortable string for ranking
author | IBBoard <dev@ibboard.co.uk> |
---|---|
date | Thu, 07 Dec 2023 21:06:48 +0000 |
parents | 76cc43966538 |
children |
rev | line source |
---|---|
0
76cc43966538
Start https://adventofcode.com/2023/day/1 in Ruby
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
1 #! /usr/bin/env ruby |
76cc43966538
Start https://adventofcode.com/2023/day/1 in Ruby
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
2 |
76cc43966538
Start https://adventofcode.com/2023/day/1 in Ruby
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
3 if ARGV.length != 1 |
76cc43966538
Start https://adventofcode.com/2023/day/1 in Ruby
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
4 abort("Incorrect arguments - pass a single file") |
76cc43966538
Start https://adventofcode.com/2023/day/1 in Ruby
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
5 elsif not File.exist? (ARGV[0]) |
76cc43966538
Start https://adventofcode.com/2023/day/1 in Ruby
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
6 abort ("File #{ARGV[0]} did not exist") |
76cc43966538
Start https://adventofcode.com/2023/day/1 in Ruby
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
7 end |
76cc43966538
Start https://adventofcode.com/2023/day/1 in Ruby
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
8 |
76cc43966538
Start https://adventofcode.com/2023/day/1 in Ruby
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
9 file = ARGV[0] |
76cc43966538
Start https://adventofcode.com/2023/day/1 in Ruby
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
10 sum = 0 |
76cc43966538
Start https://adventofcode.com/2023/day/1 in Ruby
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
11 File.open(file, "r").each_line do |line| |
76cc43966538
Start https://adventofcode.com/2023/day/1 in Ruby
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
12 match = /^[^0-9]*([0-9]).*?(([0-9])[^0-9]*)?$/.match(line) |
76cc43966538
Start https://adventofcode.com/2023/day/1 in Ruby
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
13 if match |
76cc43966538
Start https://adventofcode.com/2023/day/1 in Ruby
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
14 first_num = match[1].to_i |
76cc43966538
Start https://adventofcode.com/2023/day/1 in Ruby
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
15 second_num = match[3].nil? ? first_num : match[3].to_i |
76cc43966538
Start https://adventofcode.com/2023/day/1 in Ruby
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
16 sum += (first_num * 10) + second_num |
76cc43966538
Start https://adventofcode.com/2023/day/1 in Ruby
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
17 end |
76cc43966538
Start https://adventofcode.com/2023/day/1 in Ruby
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
18 end |
76cc43966538
Start https://adventofcode.com/2023/day/1 in Ruby
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
19 |
76cc43966538
Start https://adventofcode.com/2023/day/1 in Ruby
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
20 puts sum |