package main

import "fmt"

type img struct {
	raw []string
}

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

// 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
}

// String implements the Stringer interface
func (i img) String() string {
	out := ""
	for _, line := range i.raw {
		out += fmt.Sprintf("%s\n", line)
	}
	return out
}