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Questions and Answers
What is a drawback of using an array?
What is a drawback of using an array?
- The capacity of the array must be fixed when it is created (correct)
- Insertions and deletions at interior positions of an array are always fast
- Arrays are not suitable for storing things in a certain order
- Arrays do not allow for any form of data storage
What does a singly linked list consist of?
What does a singly linked list consist of?
- A sequence of nodes with a tail pointer
- A sequence of nodes with a head pointer (correct)
- A sequence of nodes without any pointers
- A sequence of nodes with fixed capacity
What does each node in a singly linked list store?
What does each node in a singly linked list store?
- Only the next element
- Previous element and next element
- Next element and head (correct)
- Only the head
Why are insertions and deletions at interior positions of an array time consuming?
Why are insertions and deletions at interior positions of an array time consuming?
What is an alternative to an array-based structure?
What is an alternative to an array-based structure?
What is a drawback of using a singly linked list?
What is a drawback of using a singly linked list?
What is a benefit of using a singly linked list over an array?
What is a benefit of using a singly linked list over an array?
Which data structure is more suitable for frequent insertions and deletions at interior positions?
Which data structure is more suitable for frequent insertions and deletions at interior positions?
What does the capacity of an array need to be when it is created?
What does the capacity of an array need to be when it is created?
What does each node in a singly linked list store?
What does each node in a singly linked list store?
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Study Notes
Arrays
- Drawback: Fixed size limit; requires predefined capacity which may lead to wasted space or insufficient storage.
- Time-consuming insertions and deletions at interior positions: Involves shifting elements to maintain order, making it inefficient.
Singly Linked Lists
- Consist of nodes linked sequentially, where each node points to the next.
- Each node stores:
- Data or value
- Reference to the next node in the sequence.
Comparisons and Alternatives
- Alternative to an array-based structure: Singly linked lists offer dynamic size and easier modifications.
- Drawback of singly linked lists: Increased memory usage due to storage of pointers, leading to overhead.
- Benefit over arrays: Easier and more efficient frequent insertions and deletions at interior positions without shifting elements.
Array Capacity
- Array capacity must be determined at creation; it limits flexibility since it cannot change dynamically based on data needs.
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