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I know that 2d arrays are arrays of arrays. To get a row you can do:
rowArray = my2Darray[row] Since each row can be a different size, I'm assuming it's not built in to get a column from a 2D array. It leads me to believe you'd have to do something like:
for(int row = 0; row < numRows; row++) { colArray[row] = m2Darray[row][columnOfInterest]; } Is this correct? Is it the only way?
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If you want to get the rows, you need to get the values from each array, then create a new array from the values. You can assign the values manually, or use a for-loop, such as this... Otherwise, turn your entire array around so that it stores {row,column} instead of {column,row} , like this...
Arrays in Java can store many items of the same type. You can even store items in two-dimensional (2D) arrays which are arrays that have both rows and columns. A row has horizontal elements. A column has vertical elements.
If you are locked down to using a 2d array, then yes, this is it afaik. However, a suggestion that may help you (if possible):
Wrap the array in a class that handles the column fetching.
Good luck.
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