java equation of vectors

Question

I have a matrix and few bottom lines of the matrix are same, so i wanted to just dont show them when i print the matrix. I tried 2 diffent aproaches but non of them works.

if (matrix[index] == matrix[index+1] {
    system.out.println("Next lines are same");
}

and

if (matrix[index].equals(matrix[index+1]) {
    system.out.println("Next lines are same");
}

After both ifs i add 1 to index as im showing lines of the matrix one by one

Don't you think the information what type `matrix` exactly is is kind of necessary for any help? Going by the code you posted it is an array, but we have no idea what kind of array. — OH GOD SPIDERS, Jan 14 '20 at 10:57
I dont think so, its same as my first example...never shows its same — Ondra Jahoda, Jan 14 '20 at 11:13

score 1 · Accepted Answer · answered Jan 14 '20 at 11:22

1

Try using:

 if (Arrays.equals(matrix[index], matrix[index+1]) ) {
                    ....
 }

answered Jan 14 '20 at 11:22

Magdalena Fairfax

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java equation of vectors

1 Answers1