Rotate Image(二位數組順時針旋轉)

問題描述： You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Follow up: Could you do this in-place? 中文題目： 有一個NxN整數矩陣，請編寫一個算法，將矩陣順時針旋轉90度。 給定一個NxN的矩陣，和矩陣的階數

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