aoc2023/day-13/image.go

package main

type imgs struct {
	img []img
}

func newImages() imgs {
	return imgs{img: make([]img, 0)}
}

type img struct {
	raw []string
}

func newImg() img {
	return img{raw: make([]string, 0)}
}

// transposed rotates an image rightwards ninety degrees
func (i img) transposed() []string {
	transposed := []string{}

	for x := 0; x < len(i.raw[0]); x++ {
		buf := ""
		for j := len(i.raw) - 1; j >= 0; j-- {
			buf += string(i.raw[j][x])
		}
		transposed = append(transposed, buf)
	}

	return transposed
}

var images imgs