CODEWITHSUNDEEP
java
user451995
user451995

Reputation: 11

Printing from column vector to row vector?

I am very new to Java. I have a 5*5 matrix in a file. When I am trying to import the elements of the matrix in a matrix variable and printing it, it prints in 25*1, not 5*5. How can I convert the individual column vector into the corresponding row vector?

It would be great if someone helps. Thanks

Upvotes: 1

Views: 1075

Answers (3)

fredley
fredley

Reputation: 33941

Store your data for the matrix in a 2D array. If your matrix is 5x5 you'll need 5 an array of 5 arrays. If I were doing this, I'd write my own Matrix class to store and manipulate the matrix's contents, using 2d arrays internally.

Upvotes: 1

Bozho
Bozho

Reputation: 597362

You can have vector of vectors. But instead of Vector use ArrayList (it's the same but without an unnecessary synchronization).

List<List<?>> 2dVector = new ArrayList<List<?>>()

Then you can call 2dVector.get(0).get(1) for example. You will just have to initialize each item with new ArrayList<?>. Note that you can replace ? with String, Integer or whatever your type is.

Upvotes: 1

setzamora
setzamora

Reputation: 3640

Sounds like homework,

// Assuming you have a Vector holding Elements
Vector<Element> vector = new Vector<Element>();

// Populate vector

// Print vector contents in 5 X 5
int i = 0;
for (Element e : vector)  {
    // If already printed 5 elements
    if (i % 5 == 0) {
        System.out.print("\n");
    }
    System.out.print(e.toString() + ' ');
    i++;
}

This is if you're storing in a 1D collection. You can always use 2D array, or a self-containing List or Vector.

Upvotes: 1

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