Package g0001_0100.s0048_rotate_image

Class Solution

  • All Implemented Interfaces:
    
public final class Solution

    48 - Rotate Image\.

    Medium

    You are given an n x n 2D matrix representing an image, rotate the image by 90 degrees (clockwise).

    You have to rotate the image in-place , which means you have to modify the input 2D matrix directly. DO NOT allocate another 2D matrix and do the rotation.

    Example 1:

    Input: matrix = \[\[1,2,3],4,5,6,7,8,9]

    Output: [7,4,1,8,5,2,9,6,3]

    Example 2:

    Input: matrix = \[\[5,1,9,11],2,4,8,10,13,3,6,7,15,14,12,16]

    Output: [15,13,2,5,14,3,4,1,12,6,8,9,16,7,10,11]

    Constraints:

    • n == matrix.length == matrix[i].length

    • 1 <= n <= 20

    • -1000 <= matrix[i][j] <= 1000

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description

    • Field Summary

      Fields 
      Modifier and Type Field Description

    • Constructor Summary

      Constructors 
      Constructor Description
      Solution()

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description

    • Method Summary

      Modifier and Type Method Description
      final Unit rotate(Array<IntArray> matrix)

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait