111 lines
2.7 KiB
Bash
Executable File
111 lines
2.7 KiB
Bash
Executable File
#!/bin/bash
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#
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# ex1.bash: Advent2020 game, day 22/game 1.
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CMD=${0##*/}
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shopt -s extglob
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set -o noglob
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declare -a cards=() CARDS1=() CARDS2=()
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declare -i count=-1
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while read -r line; do
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case ${line:0:1} in
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P*)
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((count++))
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;;
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[1-9]*)
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cards[$count]+=" $line"
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;;
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esac
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done
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# shellcheck disable=SC2206
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CARDS1=(${cards[0]}) && CARDS2=(${cards[1]})
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# params: (%d)depth (int ref)result (array name)player1 (array name)player2
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declare -i game=0
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run() {
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local -n _res="$1" _p1="$2" _p2="$3"
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local -a p1=(${_p1[@]}) p2=(${_p2[@]}) sp1 sp2
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local -A hash=()
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local winner=0 round=1 g # 1: p1, 2: p2
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local str
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((game++))
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g=$game
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printf "\n=== Game %d ===\n" "$g"
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#printf " p1=%s \n" "${p1[*]}"
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#printf " p2=%s \n" "${p2[*]}"
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while ((${#p1[@]} && ${#p2[@]})); do
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echo
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echo -n "-- "
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printf "Round %d (Game %d) --\n" "$round" "$g"
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S="${p1[*]}"
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S="${S// /, }"
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printf "Player 1's deck: %s\n" "$S"
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S="${p2[*]}"
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S="${S// /, }"
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printf "Player 2's deck: %s\n" "$S"
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str="${p1[*]} ${p2[*]}"
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#[[ -v ${!hash[$_str]} ]] && return 1
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if [[ -v hash["$str"] ]]; then
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_res=1
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return 1
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fi
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printf "Player 1 plays: %s\n" "$p1"
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printf "Player 2 plays: %s\n" "$p2"
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hash["$str"]=""
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if ((p1 < ${#p1[@]} && p2 < ${#p2[@]} )); then
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sp1=(${p1[*]:1:p1})
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sp2=(${p2[*]:1:p2})
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printf "Playing a sub-game to determine the winner...\n"
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run winner sp1 sp2
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winner=$?
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printf "...anyway, back to game %d.\n" "$g"
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else
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((p1 > p2)) && winner=1 || winner=2
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fi
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if ((winner==1)); then
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p1+=("$p1" "$p2")
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_res=1
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printf "Player 1 wins round %d of game %d!\n" "$round" "$g"
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else
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p2+=("$p2" "$p1")
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_res=2
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printf "Player 2 wins round %d of game %d!\n" "$round" "$g"
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fi
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p1=("${p1[@]:1}")
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p2=("${p2[@]:1}")
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#printf " p1=%s\n" "${p1[*]}"
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#printf " p2=%s\n" "${p2[*]}"
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((round++))
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done
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_p1=(${p1[@]})
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_p2=(${p2[@]})
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_res="$winner"
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printf "The winner of game %d is player %d!\n\n" "$g" "$_res"
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return "$winner"
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}
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declare -i res
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run res CARDS1 CARDS2
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declare -i n=$((${#CARDS1[@]}+${#CARDS2[@]})) i
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res=0
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S="${CARDS1[*]}"
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S="${S// /, }"
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printf "Player 1's deck: %s\n" "$S"
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S="${CARDS2[*]}"
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S="${S// /, }"
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printf "Player 2's deck: %s\n" "$S"
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for i in "${CARDS1[@]}" "${CARDS2[@]}"; do
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((res+=n*i, n--))
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done
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printf "%s: res=%d (should be 32760)\n" "$CMD" "$res"
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exit 0
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