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प्रश्न
State the principle by which the stack data structure works.
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उत्तर
Last In First Out (LIFO)
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संबंधित प्रश्न
With suitable example explain how tree can be represented in Memory?
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Leaf
Define the following terms with reference to Tree : Sibling
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A Queue is a linear data structure in which the operations are performed based on FIFO (First In First Out).
Define a class Queue with the following details:
| Class name | Queue |
| Data member/instance variable: | |
| dat[ ] | array to hold the integer elements |
| cap | stores the maximum capacity of the queue |
| front | to point the index of the front |
| rear | to point the index of the rear |
| Member functions/methods: | |
| Queue(int max) | constructor to initialize the data member cap = max, front = rear = 0 and create the integer array |
| void add_dat(int v) | to add integers from the rear index if possible else display the message(“Queue full”) |
| int pop_dat( ) | to remove and return elements from front, if any, else returns -999 |
| void display() | to display elements of the queue |
Specify the class Queue giving the details of void add_dat(int) and int pop_dat( ). Assume that the other functions have been defined.
The main( ) function and algorithm need NOT be written.
A double ended queue is a linear data structure which enables the user to add and remove integers from either ends i.e., from front or rear.
The details for the class deQueue are given below:
| Class name | deQueue |
|
Data members/instance variables: |
|
| Qrr[] | array to hold integer elements |
| lim | maximum capacity of the dequeue |
| front | to point the index of the front end |
| rear | to point the index of the rear end |
|
Methods/Member functions: |
|
| deQueue(int 1) | constructor to initialise lim = 1, front = 0 and rear =0 |
| void addFront(int v) | to add integers in the dequeue at the front end if possible, otherwise display the message “OVERFLOW FROM FRONT” |
| void addRear(int v) | to add integers in the dequeue at the rear end if possible, otherwise, display the message “OVERFLOW FROM REAR” |
| int popFront() | removes and returns the integers from the front end of the dequeue if any, else returns — 999 |
| int popRear ( ) | removes and returns the integers from the rear end of the dequeue if any, else returns — 999 |
| void show( ) | displays the elements of the dequeue |
Specify the class deQueue giving details of the function void addFront(int) and int popFront(). Assume that the other functions have been defined. The main() function and algorithm need NOT be written.
Differentiate between a stack and a queue.
