22 lines
449 B
Go
22 lines
449 B
Go
// Package q48 implements a solution for https://leetcode.com/problems/rotate-image/
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package q48
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func rotateCell(matrix [][]int, x, y int) {
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t := matrix[y][x]
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for range 4 {
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nextX, nextY := len(matrix)-1-y, x
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matrix[nextY][nextX], t = t, matrix[nextY][nextX]
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x, y = nextX, nextY
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}
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}
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func rotate(matrix [][]int) {
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w := len(matrix)
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for y := range w / 2 {
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for x := y; x < w-y-1; x++ {
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rotateCell(matrix, x, y)
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}
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}
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}
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var _ = rotate
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