I wanted to know if it is possible to convert two single dimensional array into one two dimensional array using arraylists.
Here's my code:
String[] user = (String[])compList.toArray(new String[usersList.size()]);
String[] computer = (String[])compList.toArray(new String[compList.size()]);
I assume
String[] user = (String[])compList.toArray(new String[usersList.size()]);
should be
String[] user = (String[])usersList.toArray(new String[usersList.size()]);
I don't think this is possible, assuming you want something like
String comuterUser[][]
where computerUser[0] is the user and computerUser[1] is the computer. You'll have to iterate through the lists and populate the array. Something like (assuming the two lists are of equal length):
String computerUser[][] = new String[usersList.size()][];
for (int i = 0; i < computerUser.lenth; i++) {
computerUser[i] = new String[]{ usersList.get(i), compList.get(i) };
}
Best to have the two lists ArrayLists for speedy lookup. I haven't tested the above, but it should work.
You can combine the arrays using System.arrayCopy.
private String[][] wideArray(String[] zero, String[] one) {
String[][] combined=new String[2][Math.max(zero.length, one.length)];
System.arraycopy(zero, 0, combined[0], 0, zero.length);
System.arraycopy(one, 0, combined[1], 0, one.length);
return combined;
}
