Q. |
## Which data structure allows deleting data elements from and inserting at rear? |

A. | stacks |

B. | queues |

C. | dequeues |

D. | binary search tree |

Answer» B. queues |

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Data Structure (DS)

- Which data structure allows deleting data elements from front and inserting at rear?
- Suppose a circular queue of capacity (n – 1) elements is implemented with an array of n elements. Assume that the insertion and deletion operation are carried out using REAR and FRONT as array index variables, respectively. Initially, REAR = FRONT = 0. The conditions to detect queue full and queue empty are
- Consider a standard Circular Queue 'q' implementation (which has the same condition for Queue Full and Queue Empty) whose size is 11 and the elements of the queue are q[0], q[1], q[2].....,q[10]. The front and rear pointers are initialized to point at q[2] . In which position will the ninth element be added?
- Which of the following data structure can’t store the non-homogeneous data elements?
- Which of the following data structure can’t store the non-homogeneous data elements?
- Suppose you are given an implementation of a queue of integers. The operations that can be performed on the queue are: i. isEmpty (Q) — returns true if the queue is empty, false otherwise. ii. delete (Q) — deletes the element at the front of the queue and returns its value. iii. insert (Q, i) — inserts the integer i at the rear of the queue. Consider the following function: void f (queue Q) { int i ; if (!isEmpty(Q)) { i = delete(Q); f(Q); insert(Q, i); } }What operation is performed by the above function f ?
- Which of the following data structure is not linear data structure?
- Identify the data structure which allows deletions at both ends of the list but insertion at only one end.
- Identify the data structure which allows deletions at both ends of the list but insertion at only one end.
- Inserting an item into the stack when stack is not full is called …………. Operation and deletion of item form the stack, when stack is not empty is called ………..operation.

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