59 lines
1.2 KiB
Bash
Executable File
59 lines
1.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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unset PATH; readonly PATH
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source ./utils/main.sh
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source ./utils/array.sh
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is_report_valid() {
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local report=() current_sign='' i=0
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read -ra report <<< "$1"
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for (( i = 0; i < ${#report[@]} - 1; i++ )); do
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local a="${report[i]}" b="${report[i+1]}" diff='' sign=''
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diff="$((a - b))"
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((${diff#-} >= 1 && ${diff#-} <= 3)) || return 1
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if ((diff > 0)); then
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sign='+'
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else
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sign='-'
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fi
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[[ -z "${current_sign:-}" ]] && current_sign="$sign"
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[[ "$sign" != "$current_sign" ]] && return 1
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done
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return 0
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}
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p1() {
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local input="$1" result=0 line=''
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while read -r line; do
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is_report_valid "$line" && ((result++))
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done <<< "$input"
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printf '%d' "$result"
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}
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p2() {
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local input="$1" result=0 line=''
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while read -r line; do
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local original_report
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read -ra original_report <<< "$line"
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is_report_valid "$line" && ((result++)) && continue
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for (( i = 0; i < ${#original_report[@]}; i++ )); do
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local report
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report=("${original_report[@]::"$i"}" "${original_report[@]:"$((i+1))"}")
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is_report_valid "${report[*]}" && ((result++)) && continue 2
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done
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done <<< "$input"
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printf '%d' "$result"
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}
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main "$@"
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