Mercurial > repos > other > adventofcode2023
annotate day2b.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 | 49dd1ae93696 |
children |
rev | line source |
---|---|
1
49dd1ae93696
Implement day 2 with map and reduce
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
1 #! /usr/bin/env ruby |
49dd1ae93696
Implement day 2 with map and reduce
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
2 |
49dd1ae93696
Implement day 2 with map and reduce
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
3 if ARGV.length != 1 |
49dd1ae93696
Implement day 2 with map and reduce
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
4 abort("Incorrect arguments - needs input file") |
49dd1ae93696
Implement day 2 with map and reduce
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
5 elsif not File.exist? (ARGV[0]) |
49dd1ae93696
Implement day 2 with map and reduce
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
6 abort("File #{ARGV[0]} did not exist") |
49dd1ae93696
Implement day 2 with map and reduce
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
7 end |
49dd1ae93696
Implement day 2 with map and reduce
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
8 |
49dd1ae93696
Implement day 2 with map and reduce
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
9 file = ARGV[0] |
49dd1ae93696
Implement day 2 with map and reduce
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
10 |
49dd1ae93696
Implement day 2 with map and reduce
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
11 sum = 0 |
49dd1ae93696
Implement day 2 with map and reduce
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
12 File.open(file, "r").each_line do |line| |
49dd1ae93696
Implement day 2 with map and reduce
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
13 _, all_picks = line.split(":") |
49dd1ae93696
Implement day 2 with map and reduce
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
14 sum += all_picks.split(";").map do |pick| |
49dd1ae93696
Implement day 2 with map and reduce
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
15 pick.split(",").to_h { |colour_pick| colour_pick.strip.split(" ").reverse }.transform_values(&:to_i) |
49dd1ae93696
Implement day 2 with map and reduce
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
16 end.reduce(Hash.new) {|reduced,obj| reduced.merge(obj) { |key,val1,val2| val1 > val2 ? val1 : val2 }}.values.reduce(1, :*) |
49dd1ae93696
Implement day 2 with map and reduce
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
17 end |
49dd1ae93696
Implement day 2 with map and reduce
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
18 |
49dd1ae93696
Implement day 2 with map and reduce
IBBoard <dev@ibboard.co.uk>
parents:
diff
changeset
|
19 puts sum |