diff options
| author | DJ O'Leary <dijitol@proton.me> | 2026-06-26 18:04:09 +0200 |
|---|---|---|
| committer | DJ O'Leary <dijitol@proton.me> | 2026-06-26 18:04:09 +0200 |
| commit | 6d8fb621d1e93b83786890d6d9cb6f0d8defa8ae (patch) | |
| tree | 17c90d3984c114aa023600cc5bec6f6004b02243 /2023/go/internal/day_04/part_01/part_01.go | |
| parent | ad4ea5ca4bc9f7540ee1d6a4fa2d881709dc6459 (diff) | |
refactor!: invert repo directory structure
now is language first
Diffstat (limited to '2023/go/internal/day_04/part_01/part_01.go')
| -rw-r--r-- | 2023/go/internal/day_04/part_01/part_01.go | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/2023/go/internal/day_04/part_01/part_01.go b/2023/go/internal/day_04/part_01/part_01.go deleted file mode 100644 index 1a215b1..0000000 --- a/2023/go/internal/day_04/part_01/part_01.go +++ /dev/null @@ -1,130 +0,0 @@ -package part_01 - -import ( - "os" - "slices" - "strconv" - "strings" -) - -const USE_SAMPLE = false - -type UnparsedCard struct { - id string - winningNumbers []string - haveNumbers []string -} - -type Card struct { - id int - winningNumbers []int - haveNumbers []int -} - -func (c UnparsedCard) parse() Card { - var card Card - - id, err := strconv.Atoi(c.id) - if err != nil { - panic(err) - } - card.id = id - - for _, number := range c.winningNumbers { - num, err := strconv.Atoi(number) - if err != nil { - panic(err) - } - card.winningNumbers = append(card.winningNumbers, num) - } - - for _, number := range c.haveNumbers { - num, err := strconv.Atoi(number) - if err != nil { - panic(err) - } - card.haveNumbers = append(card.haveNumbers, num) - } - - return card -} - -func Solve() { - var contents []byte - if USE_SAMPLE { - contents, _ = os.ReadFile("../_input/day_04_part_01_sample.txt") - } else { - contents, _ = os.ReadFile("../_input/day_04.txt") - } - - lines := strings.Split(string(contents), "\n") - - answer := 0 - for _, line := range lines { - if line == "" || line == "\n" { - continue - } - - card := parseCardLine(line) - score := tallyScore(card) - - answer += score - } - - println(answer) -} - -// "Card 1: 41 48 83 86 17 | 83 86 6 31 17 9 48 53" -func parseCardLine(line string) Card { - var unparsedCard UnparsedCard - - filteredLine := strings.ReplaceAll(line, "\r", "") - - // "Card 1" - card_parts := strings.Split(filteredLine, ":")[0] - id_parts := strings.Split(card_parts, " ") - id := id_parts[len(id_parts)-1] - unparsedCard.id = strings.ReplaceAll(id, " ", "") - - // "41 48 83 86 17 | 83 86 6 31 17 9 48 53" - numbers := strings.Split(filteredLine, ":")[1] - - // " 41 48 83 86 17" - winningNumberString := strings.Split(numbers, "|")[0] - // ["", "41", "48", "83", "86", "17"] - winningNumbers := strings.Split(winningNumberString, " ") - for _, num := range winningNumbers { - if num == "" || num == " " { - continue - } - unparsedCard.winningNumbers = append(unparsedCard.winningNumbers, num) - } - - // " 83 86 6 31 17 9 48 53" - haveNumberString := strings.Split(numbers, "|")[1] - // ["", "83", "86", "", "6", "31", "17", "", "9", "48", "53"] - haveNumbers := strings.Split(haveNumberString, " ") - for _, num := range haveNumbers { - if num == "" || num == " " { - continue - } - unparsedCard.haveNumbers = append(unparsedCard.haveNumbers, num) - } - - return unparsedCard.parse() -} - -func tallyScore(card Card) int { - score := 0 - for _, winningNumber := range card.winningNumbers { - if slices.Contains(card.haveNumbers, winningNumber) { - if score == 0 { - score = 1 - } else { - score *= 2 - } - } - } - - return score -} |
