Algorithms interview question · Most asked
Reverse a singly linked list iteratively.
Summary
Three pointers: prev=None, cur=head; while cur: nxt=cur.next; cur.next=prev; prev=cur; cur=nxt; return prev.
Longer Answer
Three pointers: prev=None, cur=head; while cur: nxt=cur.next; cur.next=prev; prev=cur; cur=nxt; return prev. List reverse.
Key Points
- Three pointers: prev=None, cur=head; while cur: nxt=cur.next; cur.next=prev; prev=cur; cur=nxt; return prev
- List reverse
- Relevant areas: Dsa, Linked List
- Use the answer to connect the concept back to a realistic production or interview scenario for 'Reverse a singly linked list iteratively.'
Comparison / Tradeoffs
| Aspect | Notes |
|---|---|
| Core idea | Three pointers: prev=None, cur=head; while cur: nxt=cur.next; cur.next=prev; prev=cur; cur=nxt; return prev. |
| Practical tradeoff | List reverse. |
Explanation
Summary
List reverse.
Longer Answer
List reverse. Focus on the practical implications across Dsa, Linked List.
Key Points
- List reverse
- Focus on the practical implications across Dsa, Linked List
- Relevant areas: Dsa, Linked List
- Use the answer to connect the concept back to a realistic production or interview scenario for 'Reverse a singly linked list iteratively.'
Comparison / Tradeoffs
| Aspect | Notes |
|---|---|
| Core idea | List reverse. |
| Practical tradeoff | In an interview, relate 'Reverse a singly linked list iteratively.' to implementation decisions, tradeoffs, and operational impact. |