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Python
C
Java
 
Python result:
C result:
Java result:
Queue: A B C
Dequeue: A
Peek: B
isEmpty: False
Size: 2
Queue: A B C
Dequeue: A
Peek: B
isEmpty: 0
Size: 2
Queue: A B C
Dequeue: A
Peek: B
isEmpty: false
Size: 2