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27 lines
529 B
27 lines
529 B
3 years ago
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#!/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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