mirror of
https://github.com/Threnklyn/advent-of-code-go.git
synced 2026-05-18 19:13:27 +02:00
alexchao26
62 lines
1.7 KiB
Go
62 lines
1.7 KiB
Go
package main
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import (
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"github.com/alexchao26/advent-of-code-go/util"
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"fmt"
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"strconv"
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"strings"
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)
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func main() {
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input := util.ReadFile("../input.txt")
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lines := strings.Split(input, "\n")
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coords := makeMapOfCoordinates(lines)
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for _, line := range lines {
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uniqueID := hasNoOverlap(coords, line)
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if uniqueID != -1 {
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fmt.Println("Unique Plan ID is:", uniqueID)
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}
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}
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}
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func makeMapOfCoordinates(lines []string) map[string]int {
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seen := make(map[string]int)
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for _, line := range lines {
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// ID := line[:strings.Index(line, " @")]
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row, _ := strconv.Atoi(line[strings.Index(line, "@")+2 : strings.Index(line, ",")])
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col, _ := strconv.Atoi(line[strings.Index(line, ",")+1 : strings.Index(line, ":")])
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width, _ := strconv.Atoi(line[strings.Index(line, ":")+2 : strings.Index(line, "x")])
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height, _ := strconv.Atoi(line[strings.Index(line, "x")+1:])
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for i := 0; i < width; i++ {
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for j := 0; j < height; j++ {
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coords := fmt.Sprintf("%vx%v", row+i, col+j)
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seen[coords]++
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}
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}
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}
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return seen
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}
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// if cut is unique returns the ID, otherwise -1
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func hasNoOverlap(seen map[string]int, line string) int {
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ID, _ := strconv.Atoi(line[1:strings.Index(line, " @")])
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row, _ := strconv.Atoi(line[strings.Index(line, "@")+2 : strings.Index(line, ",")])
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col, _ := strconv.Atoi(line[strings.Index(line, ",")+1 : strings.Index(line, ":")])
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width, _ := strconv.Atoi(line[strings.Index(line, ":")+2 : strings.Index(line, "x")])
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height, _ := strconv.Atoi(line[strings.Index(line, "x")+1:])
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for i := 0; i < width; i++ {
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for j := 0; j < height; j++ {
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coords := fmt.Sprintf("%vx%v", row+i, col+j)
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if seen[coords] != 1 {
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return -1
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}
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}
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}
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return ID
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}
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