29 lines
591 B
Bash
Executable File
29 lines
591 B
Bash
Executable File
#!/bin/bash
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#
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# ex2-sort.bash: Advent2020 game, day 1/game 2, with sort.
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CMD=${0##*/}
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readarray -t numbers <<< "$(sort -n)"
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declare -i i j k a b c m1 m2
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for ((i=0; i<${#numbers[@]}; ++i)); do
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a=$((numbers[i]))
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for ((j=i+1; j<${#numbers[@]}; ++j)); do
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b=$((numbers[j]))
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((a+b > 2020)) && break
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for ((k=j+1; k<${#numbers[@]}; ++k)); do
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c=$((numbers[k]))
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((a+b+c > 2020)) && break
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if ((a+b+c == 2020)); then
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printf "${CMD} : %d:%d %d:%d %d:%d sum=%d mul=%d\n" \
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$i $a $j $b $k $c \
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$((a+b+c)) \
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$((a*b*c))
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break 3
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fi
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done
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done
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done
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exit 0
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