数组交换 - 二维数组 [英] Array swap - 2d array

问题描述

我工作在一个二维阵列换指数。我似乎是在正确的轨道上，但它不是在交换我想要的方式排列。

I'm working on swapping indices in a two-dimensional array. I seem to be on the right track, but it's not swapping the array in the way I want.

第一行的索引Ĵ需要与第2行的索引被换Ĵ：

The first row's index j needs to be swapped with row 2's index j:

for (int j = 0; j < array.length ; j++){  
     int temp = array[row1][j]
     array[row1][j]=array[j][row1]
     array[j][row1] = temp ;
}

如何以最佳方式处理这个任何想法，将AP preciated。

Any ideas on how to best approach this would be appreciated.

推荐答案

由于Java中的二维数组实际上是其他数组引用的数组，你可以简单地交换引用，如下所示：

As the two-dimensional array in java is actually a array of references to other arrays, you can simply swap the references as shown below:

public static void swapRows(int array[][], int rowA, int rowB) {
   int tmpRow[] = array[rowA];
   array[rowA] = array[rowB];
   array[rowB] = tmpRow;
}

/修改：编辑的答案，因为我previously misinter preTED它**

/edit: edited the answer as I previously misinterpreted it**

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