day3

Documentation

Index

• func Part1(schematic Schematic) int
• func Part2(schematic Schematic) int
• type Position
• type Schematic
  • func LoadSchematic(filename string) (Schematic, error)

Functions

func Part1

func Part1(schematic Schematic) int

Part1 sums the numbers that are adjacent to at least one symbol, even diagonally.

func Part2

func Part2(schematic Schematic) int

Part2 sums the gear ratios in the engine, where a gear ratio is the product of the two numbers adjacent to a '*'. '*'s that don't have exactly two adjacent numbers don't have a gear ratio.

Types

type Position

type Position struct {
	// contains filtered or unexported fields
}

Position is a row and column in the schematic. It can indicate the start of a number, or the position of a symbol.

type Schematic

type Schematic struct {
	// contains filtered or unexported fields
}

Schematic is a parsed schematic containing numbers, symbols, and their positions

func LoadSchematic

func LoadSchematic(filename string) (Schematic, error)

LoadSchematic loads a schematic from the given file. The schematic contains numbers, symbols, and periods.