How do you instantiate an array in Java?

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Question:
How do you instantiate an array in Java?

1.int arr[] = new int(3);

2. int arr[];

3.int arr[] = new int[3];

4.. int arr() = new int(3);

Posted Date:-2022-07-11 05:22:03

More MCQS Questions and answers

  1. A list that has no nodes is called________.
  2. A path P of length n from a node u to a node v is defined as a sequence of _________ nodes.
  3. A vertex of degree one is called __________
  4. An edge E is called _________ if it has identical endpoints.
  5. Divide and conquer is an important algorithm design paradigm based on _______.
  6. Each entry in a linked list is a called a_______________.
  7. In a graph G if e=(u,v), then u and v are called ___________.
  8. In a linked list the _________field contains the address of next element in the list.
  9. The binary tree that has n leaf nodes. The number of nodes of degree 2 in this tree is
  10. The correctness of a divide and conquer algorithm is usually proved by _________.
  11. The possibility of two different keys k1 & k2 yielding the same hash address is called_______
  12. Which of the following is two way lists?
  13. ___ is finding a path/tour through the graph such that every vertex is visited exactly once.
  14. ______ is not a technique of tree traversal.
  15. _________ data structure is used to implement Depth First search.
  16. _________involves maintaining two tables in memory.
  17. . If every node u in G is adjacent to every other node v in G, A graph is said to be _______.
  18. A ______________ list is a header list where the node points back to the header node.
  19. A connected graph T without any cycles is called _____________.
  20. An algorithm that calls itself directly or indirectly is known as ____________.
  21. How do you instantiate an array in Java?
  22. How many pointers are necessarily changed for the insertion in a Linked List?
  23. Quick sort uses ____ for implementation.
  24. Selection sort and quick sort both fall into the same category of sorting algorithms._________ is thatcategory.
  25. The ____________ is used in an elegant sorting algorithm.
  26. The average number of key comparisons done in a successful sequential search in a list of length n is_________
  27. The data items in a record form a ________ structure which can be described by means of level numbers.
  28. The efficiency of a BFS algorithm is dependent on _______.
  29. The efficient searching algorithm for algorithm for a sorted array is _________.
  30. The sequence (1,1) (2,1) (3,1) (1,2) (2,2) (3,2) . . . .represents _________.
  31. The special list which consists of unused memory space is called __________.
  32. To insert a new node in linked list free node will be available in ___________.
  33. Uniform distribution of the hash address throughout the given set L is _________
  34. Which of the following is a correct way to declare a multidimensional array in Java?
  35. Which of the following is true while inserting a new node in the list?
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