61 lines
1.4 KiB
Bash
61 lines
1.4 KiB
Bash
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#!/usr/bin/env bash
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set -euo pipefail
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sumNumbers() {
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local sum
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sum=0
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while IFS= read -r num || [[ -n "$num" ]]; do
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sum=$(( "$sum" + "$num" ))
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done
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echo "$sum"
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}
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gameIds () {
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sed 's|Game \(.*\): .*|\1|'
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}
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maxColour() {
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local colour counts
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colour=$1
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counts=$(echo "0 $colour"
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sed 's|Game .*: ||;
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s|, |\n|g;
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s|; |\n|g' |
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grep "$colour")
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sort --general-numeric-sort <<< "$counts" |
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tail -1 |
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sed "s| $colour||"
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}
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gamesWhichFitTheLimit() {
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local maxReds maxGreens maxBlues
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while IFS= read -r line || [[ -n "$line" ]]; do
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maxReds=$(maxColour "red" <<< "$line")
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maxGreens=$(maxColour "green" <<< "$line")
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maxBlues=$(maxColour "blue" <<< "$line")
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if [[ "$maxReds" -le 12 ]] && [[ "$maxGreens" -le 13 ]] && [[ "$maxBlues" -le 14 ]]; then
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echo "$line"
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fi
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done
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}
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powers () {
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local maxReds maxGreens maxBlues
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while IFS= read -r line || [[ -n "$line" ]]; do
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maxReds=$(maxColour "red" <<< "$line")
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maxGreens=$(maxColour "green" <<< "$line")
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maxBlues=$(maxColour "blue" <<< "$line")
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echo "$(( "$maxReds" * "$maxGreens" * "$maxBlues"))"
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done
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}
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main () {
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local input
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input=$(cat)
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echo "Part 1 Answer: $(<<<"$input" gamesWhichFitTheLimit | gameIds | sumNumbers)"
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echo "Part 2 Answer: $(<<<"$input" powers | sumNumbers)"
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}
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main
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