DSA · Theory

Array Implementation of Queue in c++

Theory

777/810

Array Implementation of Queue in c++

Array Implementation of Queue in c++ is a DSA topic. In plain words you use it for print jobs in a lab printer. Don’t start with a slogan — start with that picture.

Smallest example: enqueue / dequeue FIFO. Type it, run it, and say what you see. If you can do that from memory, you know Array Implementation of Queue in c++.

From the example next to this theory — Array Implementation of Queue in c++ — queue is FIFO.

Trap — confusing front and rear. Fix that before you talk about advanced DSA.

Viva — what is Array Implementation of Queue in c++? Then show enqueue / dequeue FIFO. Then name the trap.

Diagram

  front → [A][B][C] ← rear
  out ↑         ↑ in
       FIFO

Exam tip

What is Array Implementation of Queue in c++? Show this: enqueue / dequeue FIFO. Trap: confusing front and rear.

Example

from collections import deque

q = deque()
q.append(10)      # enqueue
q.append(20)
print(q.popleft())  # 10
print(list(q))

Array Implementation of Queue in c++ — queue is FIFO. deque.popleft() is O(1).

Short notes

DefArray Implementation of Queue in c++ — print jobs in a lab printer.
Ruleenqueue / dequeue FIFO
Trapconfusing front and rear
Usea lab printer

DSA · Theory

Array Implementation of Queue in c++

← All stacks

Theory

777/810

Array Implementation of Queue in c++

Array Implementation of Queue in c++ is a DSA topic. In plain words you use it for print jobs in a lab printer. Don’t start with a slogan — start with that picture.

Smallest example: enqueue / dequeue FIFO. Type it, run it, and say what you see. If you can do that from memory, you know Array Implementation of Queue in c++.

From the example next to this theory — Array Implementation of Queue in c++ — queue is FIFO.

Trap — confusing front and rear. Fix that before you talk about advanced DSA.

Viva — what is Array Implementation of Queue in c++? Then show enqueue / dequeue FIFO. Then name the trap.

Diagram

  front → [A][B][C] ← rear
  out ↑         ↑ in
       FIFO

Exam tip

What is Array Implementation of Queue in c++? Show this: enqueue / dequeue FIFO. Trap: confusing front and rear.

Example

from collections import deque

q = deque()
q.append(10)      # enqueue
q.append(20)
print(q.popleft())  # 10
print(list(q))

Array Implementation of Queue in c++ — queue is FIFO. deque.popleft() is O(1).

Short notes

DefArray Implementation of Queue in c++ — print jobs in a lab printer.
Ruleenqueue / dequeue FIFO
Trapconfusing front and rear
Usea lab printer

Array Implementation of Queue in c++

Example

Short notes

Questions

Array Implementation of Queue in c++

Example

Short notes

Questions