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26 lines
529 B
26 lines
529 B
#!/usr/bin/env bash |
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file="$1" |
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horizontal=0 |
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depth=0 |
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aim=0 |
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while read line; do |
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#direction="$(echo "$line" | cut -d ' ' -f 1)" |
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direction="${line%% *}" |
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#amount="$(echo "$line" | cut -d ' ' -f 2)" |
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amount="${line##* }" |
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case "$direction" in |
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forward) |
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horizontal=$((horizontal + amount)) |
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depth="$((depth + (aim * amount) ))" |
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;; |
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down) aim="$((aim + amount))" ;; |
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up) aim="$((aim - amount))" ;; |
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esac |
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done < <(cat "$file") |
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echo "Horizontal: $horizontal" |
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echo "Depth: $depth" |
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echo "Product: $(( depth * horizontal ))"
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