In which scenario would a stack be more beneficial than a queue?
Practice Questions
Q1
In which scenario would a stack be more beneficial than a queue?
When processing tasks in order of arrival
When reversing a string
When managing print jobs
When implementing breadth-first search
Questions & Step-by-Step Solutions
In which scenario would a stack be more beneficial than a queue?
Step 1: Understand what a stack is. A stack is a data structure that follows the Last In, First Out (LIFO) principle, meaning the last item added is the first one to be removed.
Step 2: Understand what a queue is. A queue is a data structure that follows the First In, First Out (FIFO) principle, meaning the first item added is the first one to be removed.
Step 3: Identify a scenario where you need to reverse something, like a string. For example, if you have the string 'hello', you want to change it to 'olleh'.
Step 4: Use a stack to reverse the string. You can push each character of the string onto the stack one by one.
Step 5: Pop the characters from the stack. Since the stack is LIFO, the last character you pushed will be the first one you pop, effectively reversing the order.
Step 6: Compare this with a queue. If you used a queue instead, the first character you added would be the first one to come out, which would not reverse the string.
Step 7: Conclude that a stack is more beneficial than a queue for reversing a string because it allows you to process the last character added first.
