55 lines
1.1 KiB
Bash
55 lines
1.1 KiB
Bash
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#!/usr/bin/env bash
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set -o errexit
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set -o nounset
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set -o pipefail
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if [[ "${TRACE-0}" == "1" ]]; then
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set -o xtrace
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fi
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cd "$(dirname "$0")"
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mapfile -t -O 1 INPUT < "input.txt"
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CARDS="${#INPUT[@]}"
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run_cards ()
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{
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# Receives space separated list of cards I have.
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for ((x=1; x<=CARDS; x++)); do
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declare -a winning=() mine=()
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declare -i matching=0
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declare -i count="${hand[$x]}"
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stripped=$(sed 's/Card\s\{1,3\}[0-9]\{1,3\}: //' <<< "${INPUT[$x]}")
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winning+=($(cut -d '|' -f 1 <<< "${stripped}"))
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mine+=($(cut -d '|' -f 2 <<< "${stripped}"))
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for number in "${mine[@]}"; do
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for w in "${winning[@]}"; do
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if [[ ${number} -eq ${w} ]]; then
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matching=$((matching+1))
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break
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fi
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done
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done
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for ((i=1; i<=matching; i++)); do
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hand[$((x+i))]=$((${hand[$((x+i))]}+count))
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done
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done
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}
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main ()
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{
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declare -i sum=0
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declare -A hand=()
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for ((z=1; z<=CARDS; z++)); do
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hand+=([${z}]=1)
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done
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run_cards "${hand[@]}"
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for ((z=1; z<=CARDS; z++)); do
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echo "card $z: ${hand[$z]}"
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sum=$((sum+${hand[$z]}))
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done
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echo "${sum}"
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}
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main "$@"
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