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geese_suck geese/suck anti-anti-evil operations  2yr ago (image post) 1,235 thread views #128394

advent of code day 3: i might be r-slurred edition

Unable to load image

idk how to do multi line spoilers lol


letters = ['','a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z', 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z']

total_score = 0

team = []

for line in open("input.txt"):
    team.append(line.strip())

for i in range(2, len(team), 3):
    for letter in team[i]:
        if letter in team[i-2] and letter in team[i-1]:
            total_score += letters.index(letter)
            break

print(total_score)

some real caveman shit but it works

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LONG POST ALERT, I'm actually kind of proud of the "contains" subfunction

package three

import (
	"bufio"
	"bytes"
	"fmt"
	"os"
)

func pos(ch byte) int {
	var alph string = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"

	return (bytes.IndexByte([]byte(alph), ch) + 1)
}

func One() int {
	var deliver int

	fp, _ := os.Open("three.txt")
	defer fp.Close()

	rd := bufio.NewScanner(fp)

	for rd.Scan() {
		line := rd.Text()
		item_len := len(line) / 2
		left := make([]byte, item_len)
		right := make([]byte, item_len)

		for i, v := range line {
			if i < item_len {
				left[i] = byte(v)
			} else {
				i %= item_len
				right[i] = byte(v)
			}
		}

		for i, v := range left {
			if bytes.ContainsRune(right, rune(v)) {
				deliver += pos(left[i])
				break
			}
		}
	}

	return deliver
}

func Two() int {
	var deliver int
	elf := make(map[int]string)

	fp, _ := os.Open("three.txt")
	defer fp.Close()

	rd := bufio.NewScanner(fp)

	for e := 0; rd.Scan(); e++ {
		elf[e] = rd.Text()
	}

	contains := func(a string, b string, c string) (byte, error) {
		var master string
		var children []string

		if len(a) > len(b) && len(a) > len(c) {
			master = a
			children = []string{b, c}
		} else if len(b) > len(a) && len(b) > len(c) {
			master = b
			children = []string{a, c}
		} else {
			master = c
			children = []string{a, b}
		}

		for _, v := range master {
			var a_common, b_common byte

			if bytes.ContainsRune([]byte(children[0]), v) {
				a_common = byte(v)
			}
			if bytes.ContainsRune([]byte(children[1]), v) {
				b_common = byte(v)
			}

			if a_common == b_common && a_common > 0 {
				return a_common, nil
			}
		}

		return 'a', fmt.Errorf("no common????")
	}

	var elf_head int

	for g := 0; g < (len(elf) / 3); g++ {

		common, err := contains(elf[elf_head], elf[elf_head+1], elf[elf_head+2])

		if err == nil {
			deliver += pos(common)
		}

		elf_head += 3
	}

	return deliver
}
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Jesse what the frick are you talking about??

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