COMPUTER SCIENCE AND ENGINEERING
DATA STRUCTURES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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queues requires dynamic memory but stack do not
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stack requires dynamic memory but queue do not
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queue use two ends of the structure, stack use only one
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stack use two ends of the structure, queue use only one
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Detailed explanation-1: -A stack uses one end known as a top for insertion and deletion whereas a queue uses two ends front and rear for insertion and deletion. Both stacks and queues store only similar kinds of elements. The insertion operation in a stack is known as push, whereas a deletion operation is known as pop.
Detailed explanation-2: -The primary difference between Stack and Queue Data Structures is that Stack follows LIFO while Queue follows FIFO data structure type. LIFO refers to Last In First Out. It means that when we put data in a Stack, it processes the last entry first. Conversely, FIFO refers to First In First Out.
Detailed explanation-3: -One difference between a queue and a stack is: Queues use two ends of the structure; stacks use only one. If the characters ‘D’, ‘C’, ‘B’, ‘A’ are placed in a queue (in that order), and then removed one at a time, in what order will they be removed?
Detailed explanation-4: -Stacks use two ends of the structure, queues use only one.
Detailed explanation-5: -Unlike stacks, a queue is open at both its ends. One end is always used to insert data (enqueue) and the other is used to remove data (dequeue).