2020 Day 3 Done!

helpers/coordinateByteMap.go

@@ -0,0 +1,46 @@
+package aoc
+
+type CoordByteMap struct {
+	Field  map[Coordinate]byte
+	Height int
+	Width  int
+}
+
+func StringSliceToCoordByteMap(input []string) CoordByteMap {
+	ret := CoordByteMap{
+		Field:  make(map[Coordinate]byte),
+		Height: len(input),
+		Width:  0,
+	}
+	for y := range input {
+		for x := range input[y] {
+			ret.Field[Coordinate{X: x, Y: y}] = input[y][x]
+			if x > ret.Width {
+				ret.Width = x
+			}
+		}
+	}
+	return ret
+}
+
+func (m *CoordByteMap) Get(pos Coordinate) byte {
+	if pos.X <= m.Width && pos.Y <= m.Height {
+		return m.Field[pos]
+	}
+	return 0
+}
+
+func (m *CoordByteMap) Put(pos Coordinate, val byte) {
+	m.Field[pos] = val
+}
+
+func (m CoordByteMap) String() string {
+	var ret string
+	for y := 0; y <= m.Height; y++ {
+		for x := 0; x <= m.Width; x++ {
+			ret = ret + string(m.Field[Coordinate{X: x, Y: y}])
+		}
+		ret = ret + "\n"
+	}
+	return ret
+}

helpers/helpers.go

@@ -101,6 +101,10 @@ func StdinToStringSlice() []string {
 	return input
 }
 
+func StdinToCoordMap() CoordByteMap {
+	return StringSliceToCoordByteMap(StdinToStringSlice())
+}
+
 func Atoi(i string) int {
 	var ret int
 	var err error