43 lines
901 B
Go
43 lines
901 B
Go
package main
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import (
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"fmt"
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"github.com/StevanFreeborn/advent-of-code-2025/internal/file"
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"github.com/StevanFreeborn/advent-of-code-2025/internal/grid"
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"github.com/StevanFreeborn/advent-of-code-2025/internal/move"
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"github.com/StevanFreeborn/advent-of-code-2025/internal/position"
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)
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const PaperRollCharacter = "@"
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func SolvePartOne(filePath string) int {
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input := file.ReadAllLines(filePath)
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grid := grid.From(input)
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total := 0
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for row := range grid.NumberOfRows() {
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for column := range grid.NumberOfColumns() {
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currentPosition := position.From(row, column)
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value := grid.GetValueAt(currentPosition)
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if value != PaperRollCharacter {
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continue
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}
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sameNeighbors := grid.GetSameNeighborsOf(currentPosition, move.AllDirections)
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if row == 0 && column == 3 {
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fmt.Println(sameNeighbors)
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}
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if len(sameNeighbors) < 4 {
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total++
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}
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}
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}
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return total
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}
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