CODEWITHSUNDEEP
javaarraysstack
Adam Yerden
Adam Yerden

Reputation: 1

Array Converted to Stack

How can you take an array and put it into a stack???? I have a card array with a deck of cards that gets shuffled then I need to change it to a stack and print the first number on top. Anyway anyone can help?

Upvotes: 0

Views: 2366

Answers (3)

Efthimis_28
Efthimis_28

Reputation: 363

There is not a single line command that would change/convert your array into a stack format. You have to do it yourself.

You haven't posted some code either, so we will have to make some assumptions.

If the array consists of Card-type-objects then what you have to do is this: 

Card[] deck; //your array

Stack<Card> deck_stack = new Stack<Card>(); //the newly created stack
//pass the array objects into the stack
for(int i=0; i<deck.length; i++) {
   deck_stack.add(deck[i]);
}
//take out the first stack object
System.out.println("Top of the deck: "+deck_stack.pop());

Upvotes: 0

Yogita Singh Chauhan
Yogita Singh Chauhan

Reputation: 11

To convert array to an stack you need to first convert it to a list and then create a new stack and add all the elements from the list to that stack. Here you can see the reference answer.

    String[] stuff = {"hello", "every", "one"};
    List<String> list = Arrays.asList(stuff); //1 Convert to a List
    //stack.addAll(list); 
    //3 Add all items from the List to the stack.
    // This won't work instead of use the following
    Stack<String> stack = new Stack<String>(); //2 Create new stack
    // this will insert string element in reverse order, so "hello" will be on top of the stack, if you want order to be as it is, just loop i over 0 to stuff.length.
    for(int i = stuff.length - 1; i >= 0; i--) {
        stack.add(stuff[i]);
    }
    System.out.println(stack.pop());//print First Element of Stack

Upvotes: 0

Guy
Guy

Reputation: 51009

You can use Collections.addAll

Card[] cardsArray;
Stack<Card> cards = new Stack<>();
Collections.addAll(cards, cardsArray);

Upvotes: 2

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