From 0f92385e2cb2c15359b2367b6e7963253bb45f25 Mon Sep 17 00:00:00 2001 From: g3po Date: Sun, 3 Dec 2023 18:42:12 +0100 Subject: [PATCH] Third day --- cmd/03/03.go | 22 ++++++++ cmd/03/input.txt | 140 ++++++++++++++++++++++++++++++++++++++++++++++ internal/03/03.go | 135 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 297 insertions(+) create mode 100644 cmd/03/03.go create mode 100644 cmd/03/input.txt create mode 100644 internal/03/03.go diff --git a/cmd/03/03.go b/cmd/03/03.go new file mode 100644 index 0000000..eeec3b3 --- /dev/null +++ b/cmd/03/03.go @@ -0,0 +1,22 @@ +package main + +import ( + "fmt" + + utils "git.anthonygueguen.fr/g3po/aoc2023/internal" + day03 "git.anthonygueguen.fr/g3po/aoc2023/internal/03" +) + +func main() { + content := utils.Init() + parts := day03.GetParts(content) + result := utils.SumIntArr(parts) + + fmt.Println("Part 1") + + fmt.Printf("Result: %d\n", result) + fmt.Println("Part 2") + + result = day03.GetRatio(content) + fmt.Printf("Result: %d\n", result) +} diff --git a/cmd/03/input.txt b/cmd/03/input.txt new file mode 100644 index 0000000..1584486 --- /dev/null +++ b/cmd/03/input.txt @@ -0,0 +1,140 @@ +...788.............................54.........501...........555.........270.................................521......893.................... +..../..*963........................*..860......................*....53...../.....................52.................&....347........428*522. +............*......41..481+.......462....$..187......678.......420....-....................&115.+...........................+............... +............707....&.........562...........*..........*.....................438....................&877..660....199..145.........71......... +.....210................356..*.........977.68.........38.......835.622.332.....*300.....131.422..............89..*.....+..........$......... 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+.......&...625......*.........7*121...........494......=...8......*....@..............................*..........*......998*973.......$..... +....691............614...795..........152............120...........238..496...........................477..........................994...... diff --git a/internal/03/03.go b/internal/03/03.go new file mode 100644 index 0000000..924a40d --- /dev/null +++ b/internal/03/03.go @@ -0,0 +1,135 @@ +package day03 + +import ( + "regexp" + "strconv" + + utils "git.anthonygueguen.fr/g3po/aoc2023/internal" +) + +func GetParts(content []string) []int { + var parts []int + re_num := regexp.MustCompile(`\d+`) + re_symbol := regexp.MustCompile(`[^\w\s.]`) + + for i, line := range content { + matches := re_num.FindAllStringIndex(line, -1) + for _, idx := range matches { + adjContent := getAdjUpLine(content, i, idx[0], idx[1]) + adjContent = adjContent + getAdjDownLine(content, i, idx[0], idx[1]) + adjContent = adjContent + getAdjInLine(content, i, idx[0], idx[1]) + if re_symbol.MatchString(adjContent) { + num_str := string(line[idx[0]:idx[1]]) + num := utils.Must(strconv.Atoi(num_str)) + parts = append(parts, num) + } + } + } + return parts +} + +func getAdjUpLine(content []string, line, start, end int) string { + adjContent := "" + if line > 0 { + adjContent = adjContent + string(content[line-1][start:end]) + if start > 0 { + adjContent = adjContent + string(content[line-1][start-1]) + } + if end < len(content[line])-1 { + adjContent = adjContent + string(content[line-1][end]) + } + } + return adjContent +} + +func getAdjDownLine(content []string, line, start, end int) string { + adjContent := "" + if line < len(content)-1 { + adjContent = adjContent + string(content[line+1][start:end]) + if start > 0 { + adjContent = adjContent + string(content[line+1][start-1]) + } + if end < len(content[line])-1 { + adjContent = adjContent + string(content[line+1][end]) + } + } + return adjContent +} + +func getAdjInLine(content []string, line, start, end int) string { + adjContent := "" + if start > 0 { + adjContent = adjContent + string(content[line][start-1]) + } + if end < len(content[line])-1 { + adjContent = adjContent + string(content[line][end]) + } + return adjContent +} + +func GetRatio(content []string) int { + ratio := 0 + re_gear := regexp.MustCompile(`\*`) + for i, line := range content { + matches := re_gear.FindAllStringIndex(line, -1) + for _, match := range matches { + start, end := match[0], match[1] + var num []int + num = append(num, getUpRatio(content, i, start, end)...) + num = append(num, getDownRatio(content, i, start, end)...) + num = append(num, getInlineRatio(content, i, start, end)...) + if len(num) == 2 { + ratio += (num[0] * num[1]) + } + } + } + return ratio +} + +func getUpRatio(content []string, line, start, end int) []int { + var num []int + if line == 0 { + return num + } + re_num := regexp.MustCompile(`\d+`) + matches := re_num.FindAllStringIndex(content[line-1], -1) + for _, match := range matches { + mStart, mEnd := match[0], match[1] + if mEnd >= start && end >= mStart { + str := string(content[line-1][mStart:mEnd]) + num = append(num, utils.Must(strconv.Atoi(str))) + } + } + return num +} + +func getDownRatio(content []string, line, start, end int) []int { + var num []int + if line >= len(content)-1 { + return num + } + re_num := regexp.MustCompile(`\d+`) + matches := re_num.FindAllStringIndex(content[line+1], -1) + for _, match := range matches { + mStart, mEnd := match[0], match[1] + if mEnd >= start && end >= mStart { + str := string(content[line+1][mStart:mEnd]) + num = append(num, utils.Must(strconv.Atoi(str))) + } + } + return num +} + +func getInlineRatio(content []string, line, start, end int) []int { + var num []int + re_num := regexp.MustCompile(`\d+`) + matches := re_num.FindAllStringIndex(content[line], -1) + for _, match := range matches { + mStart, mEnd := match[0], match[1] + if mEnd >= start && end >= mStart { + str := string(content[line][mStart:mEnd]) + num = append(num, utils.Must(strconv.Atoi(str))) + } + } + return num +}