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## Singly Linked Lists Operations Questions and Answers

**1. A linear collection of data elements where the linear node is given by means of pointer is called?**

a) Linked list

b) Node list

c) Primitive list

d) Unordered list

**Answer: **Linked list

**2. In linked list each node contains a minimum of two fields. One field is data field to store the data second field is?**

a) Pointer to character

b) Pointer to integer

c) Pointer to node

d) Node

**Answer: **Pointer to node

**3. What would be the asymptotic time complexity to add a node at the end of singly linked list, if the pointer is initially pointing to the head of the list?**

a) O(1)

b) O(n)

c) θ(n)

d) θ(1)

**Answer: **θ(n)

**4. What would be the asymptotic time complexity to insert an element at the front of the linked list (head is known)?**

a) O(1)

b) O(n)

c) O(n2)

d) O(n3)

**Answer: **O(1)

**5. What would be the asymptotic time complexity to find an element in the linked list?**

a) O(1)

b) O(n)

c) O(n2)

d) O(n4)

**Answer: **O(n)

**6. What would be the asymptotic time complexity to insert an element at the second position in the linked list?**

a) O(1)

b) O(n)

c) O(n2)

d) O(n3)

**Answer: **O(1)

**7. The concatenation of two lists can be performed in O(1) time. Which of the following variation of the linked list can be used?**

a) Singly linked list

b) Doubly linked list

c) Circular doubly linked list

d) Array implementation of list

**Answer: **Circular doubly linked list

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