Leetcode 48. Rotate Image Solution Using Golang
// Time: O(N) Space: O(1)
package leetcode
func rotate(matrix [][]int) {
n := len(matrix)
if n == 1 {
return
}
/* rotate clock-wise = 1. transpose matrix => 2. reverse(matrix[i])
1 2 3 4 1 5 9 13 13 ...
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