[Java] Transpose Array

Transpose Array :

將Array的 由橫向變成縱向（相反亦同）。

Ex：

1 2 3 4

5 6 7 8 

9 10 11 12

 
變成
1 5 9 

2 6 10

3 7 11 

4 8 12

範例程式碼如下：

public class Testtranspose
{  
  public static void main(String[] args)
  {
    
    final int[][] original = new int[][] { { 1, 2, 3, 4 }, { 5, 6, 7, 8 }, { 9, 10, 11, 12 } };
        for (int i = 0; i < original.length; i++) {
            for (int j = 0; j < original[i].length; j++) {
                System.out.print(original[i][j] + " ");
            }
            System.out.print("\n");
        }
        int[][] tranposeArray=transpose(original) ;
     for (int i = 0; i < original[0].length; i++) {
                for (int j = 0; j < original.length; j++) {
                    System.out.print(original[j][i] + " ");                   
                }
                System.out.print("\n");
            }
   }
  
  public static int[][] transpose(int[][] original) {

        int[][] transposeArray=new int[original[0].length][original.length];
        System.out.print("\n\n matrix transpose:\n");
        // transpose
        if (original.length > 0) {
            for (int i = 0; i < original[0].length; i++) {
                for (int j = 0; j < original.length; j++) {                  
                   transposeArray[i][j]=original[j][i];
                }
            }
        }
     return transposeArray;
    }
}

參考資料來源：
http://stackoverflow.com/questions/8422374/java-multi-dimensional-array-transposing