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A Pointer is a Variable.
Skill/Topic: Variables and PointersA) FalseB) TrueExplanation: A pointer is a variable and can be used as an element of a structure and as an attribute of a class in some programming languages such as C++, but not Java. However, the contents of a pointer is a memory address of another location of memory, which is usually the memory address of another variable, element of a structure, or attribute of...
warisha
- Mar 18th, 2006
Yeh, we can call pointer as a variable .it is used in some languages which supports its use.the datatype of pointer is of ptr,and not of datatype of the variable to which it is pointing.
samiksc
- Jan 19th, 2006
Yes in the languages which support use of pointers, a pointer is a variable used to hold address of a memory location.
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Char *ptGrade;Which is the data type in this declaration?
Skill/Topic: Variables and PointersA) The data type in this is CharExplanation: The data type of the memory address stored in the pointer is of Character type
s
- Jun 18th, 2006
The datatype is char * type that is the variable points to a location(stores the address of the location) which contains character type data
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What is the purpose of the isEmpty() member method?
Skill/Topic: Stacks using an ArrayA) The isEmpty() member method determines if a value is at the top of the stack and is called before an attempt is made to remove the value
sivanesh.a
- Feb 6th, 2007
To check whether the stack is empty or not...if yes returns 1 else returns 0.
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The keyword ___________ means that the attribute or member method is accessible only by a member method.
Skill/Topic: Stacks using an ArrayA) PrivateB) PublicC) Both a) and b)D) Neither a) nor b)Explanation: The keyword private means that the attribute or member method is accessible only by a member method. The instance of the class cannot directly access a private member of the class.
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The ~Queue() member function is the Constructor ?
Skill/Topic: QueueA) TrueB) FalseExplanation: The ~Queue() member function is the destructor.It uses the delete operator to remove the array from memory when the instance of the Queue class goes out of scope.
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What is the formula used to calculate the back of the queue?
Skill/Topic: QueueA) The back of the queue is calculated by using the following formula:back = (back+1) % size
Sandhya.Kishan
- Mar 26th, 2012
Back = (back+1) % size is the formula to calculate the back of the queue.
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How is the front of the queue calculated ?
Skill/Topic: QueueA) The front of the queue is calculated by front = (front+1) % size
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The last member function is _____________.
Skill/Topic: Linked ListA) appendNode()B) destroyList()C) displayNode()D) structNode()Explanation: destroyList()is the last memeber function and is called to remove the instance of the LinkedList from memory.
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Look at the following example LinkedList(){ front = NULL; back = NULL;}In this example, Both the front and back pointers are assigned a NULL value.
Skill/Topic: Linked ListA) TrueB) FalseExplanation: In this example of a the LinkedList constructor , Both the front and back pointers are assigned a NULL value.The purpose of the constructor in the linked list example is to initialize the front and back pointers as shown in the following definition. Both the front and back pointers are assigned a NULL value, which is used by the appendNode() member...
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What is the use of displayNodesReverse() member function?
Skill/Topic: Linked ListA) The displayNodesReverse() member function displays the contents of a linked list in reverse order, beginning with the node at the back of the linked list and continuing until the first node is displayed
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A doubly linked list is a linked list consisting of nodes that have both the previous and next elements.
Skill/Topic: Linked ListA) TrueB) False
shanu
- Apr 10th, 2006
a doubly linked list has got the address of the previous list as well as next linked list, with data in between...
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Astack is a data structure that organizes data similar to how you organize dishes in a stack on your kitchen counter.
Skill/Topic: Stacks using Linked ListA) TrueB) False
Venkateswara Rao
- Sep 5th, 2006
True: Stack follows Last In First Out
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Why is the constructor of the StackLinkedList class empty?
Skill/Topic: Stacks using Linked ListA) The constructor of the StackLinkedList class is empty because the constructor of the LinkedList class is called when an instance of the StackLinkedList class is declared. The constructor of the LinkedList class initializes the node and attributes that are
Sandhya.Kishan
- May 15th, 2012
The constructor is empty because the constructor of the LinkedList class is called before the constructor of the StackLinkedList class,we know that the StackLinkedList class inherits the LinkedList cl...
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Why is the destructor of the StackLinkedList class empty?
Skill/Topic: Stacks using Linked ListA) The destructor of the StackLinkedList class is empty because the destructor of the LinkedList class is called prior to the destructor of the StackLinkedList class. This is because the LinkedList class is inherited by the StackLinkedList class.
Sandhya.Kishan
- May 15th, 2012
The destructor of the LinkedList class is called before the destructor of the StackLinkedList class. The LinkedList class constructor deletes all memory that is associated with the nodes of the linked list. Therefore, the destructor of the StackLinkedList class is empty.
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__________ file contains the actual stack application.
Skill/Topic: Stacks using Linked ListA) StackLinkedListDemo.cpp
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The isEmpty () member function must determine if the stack is empty.
Skill/Topic: Stacks using Linked ListA) TrueB) FalseExplanation: The pop () member function must determine if the stack is empty
Sandhya.Kishan
- May 10th, 2012
False.
The pop() function determine whether the stack is empty or not by calling the isEmpty() member function.. -
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In an array queue, data is stored in an _____ element.
Skill/Topic: Queues Using Linked ListsA) NodeB) linked listC) arrayD) constructorExplanation: In an array queue, data is stored in an array element. In a linked list queue, data is stored in a node of a linked list
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A _______ is a data structure that organizes data similar to a line in the supermarket, where the first one in line is the first one out.
Skill/Topic: Queues Using Linked ListsA) queue linked listB) stacks linked listC) both of themD) neither of themExplanation: A queue linked list is a data structure that organizes data similar to a line in the supermarket, where the first one in line is the first one out.
Amish Kumar Aman
- Jun 5th, 2006
A:) be the Ans.
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Which node is removed from the queue when the dequeue() member method is called?
Skill/Topic: Queues Using Linked ListsA) The node at the front of the queue is removed when the dequeue() member method is called.
Sandhya.Kishan
- May 10th, 2012
The dequeue() function is used to remove the node at the front and returns a value, this value is stored in an item.
Data Structures Interview Questions
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