Implement queue using stack | GeeksforGeeks

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This video is contributed by Parul Shandilya.

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I want more questions about qeue and stack please🌸

raneenothman

I'm so used to listening to male lecturers on fast forward. Thank you Parul

JohlBrown

In the second method, we push the new element on top of stack for implementing Enqueue() operation.For representing a queue, doesn't the element should have been added as last element of stack ?

amanpandya

Great video! Please correct me if I'm wrong here.

In the video he says 2nd method is better than the first one but I don't understand why. I think both methods are same because, in the method 2 dequeue operation, we put all the elements in to another stack and then pop the top one which is good. But the video doesn't explain the continuation of it.

After we move everything into stack 2 and pop the first element, we obviously need to move back all the elements from stack 2 to stack 1 right? Otherwise, the next enqueue operation is not possible.

sandeepa

also make video on implement stack using queue

usama

Beware !
At 3:40 she removed the items from stack 1 too, which is stupidity, she should just copy them to stack 2.
Then only method 2 is better (since deque will be theta(1) when stack to has elements (not empty), otherwise when empty, we'll need to push all the elements to stack 2, and then pop them which is theta(n)

Hope it clears the reader's doubt✌

P.S - I am a class 12th student

androidking

speak louder gal
what's the point if u r not audible without earphones

ashitranjan

U r just reading the content and plz improve the slang

amruthachitluri

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