Which operation returns the topmost element of a stack?

Which operation returns the topmost element of a stack?

The pop operation visits the top element of a stack, but it permanently removes the element from a stack. The peek operation returns the value stored at the top of a stack without removing it from the stack.

How do you get to the top element of a stack?

top() is used to access the element at the top of the stack container. In a stack, the top element is the element that is inserted at the last or most recently inserted element.

What is pop operation in stack?

In case of stack deletion of any item from stack is called pop. In any item is delete from top of the stack, When you delete any item from stack top will be decreased by 1.

Does stack pop return?

Stack pop() Method in Java pop() method in Java is used to pop an element from the stack. The element is popped from the top of the stack and is removed from the same. Parameters: The method does not take any parameters. Return Value: This method returns the element present at the top of the stack and then removes it.

What happens if you pop an empty stack Java?

The pop() method removes and returns the top element of the stack. An EmptyStackException exception is thrown if we call the pop() method on an empty stack.

When stack is empty its size can be?

stack::empty() function is an inbuilt function in C++ STL, which is defined in <stack>header file. empty() is used to check whether the associated container is empty or not and return true or false accordingly. The function checks the container should be empty means the size of the container should be 0.

What is the value of top when stack is empty?

top == -1 ) If it is EMPTY, then display “Stack is EMPTY!!!” and terminate the function. If it is NOT EMPTY, then define a variable i and initialize with top. Display stack[i] value and decrement i value by one ( i– ). Repeat above step until i value becomes 0 .

How do you clear a stack?

clear() method is used to remove all the elements from a Stack. Using the clear() method only clears all the element from the Stack and does not delete the Stack. In other words, we can say that the clear() method is used to only empty an existing Stack.

What happens when you push a new node onto a stack?

When you push element in stack, then stack pointer i.e top is incremented but also check for overflow occurs.

How do I force a print queue to delete?

Command Method

1. Select Start.
2. Type Command .
3. Right-click “Command Prompt” and select “Run as administrator“.
4. Type net stop spooler then press “Enter“.
5. Type del %systemroot%\System32\spool\printers\* /Q then press “Enter“.
6. Type net start spooler then press “Enter“.
7. The print queue on your Windows should now be cleared.

Why does Spotify keep playing queue?

So the Queue is just a list of what songs will play after the one you’re currently listening to. If you are listening to an playlist straight through, the next song in the queue will be the next in the playlist, for example. So, say you’re listening to your Discover Weekly.

How do I clear my playlist queue?

Open the Spotify app. Click on the queue button located in the lower right corner that looks like a three-line icon. Below your “Now Playing” section, you’ll see the “Clear” button. Click on it to remove all songs from your queue.

How do I remove something from my queue on Spotify?

How to clear your queue on Spotify on mobile. In the mobile app for iPhone and Android, there’s no way to clear your entire queue at once with a single button — you have to go song-by-song.

How do you clear the TV queue on YouTube?

Remove videos from your TV Queue

1. View your TV Queue.
2. Tap More next to the video you want to remove.
3. Tap Remove from TV Queue.

How do I access my queue on YouTube?

You can pull up from the bottom panel to see your queue, while lyrics are a tap away. The mini-player that’s available while you browse the app also sees a small tweak. Instead of a close button in the bottom-right, you can clear your queue by swiping down.

How do I edit my YouTube queue?

Use the instructions below.

1. Go to the Account tab in the YouTube app.
2. Select the playlist you’d like to edit.
3. Tap the edit pencil that appears below your playlist title.
4. Edit a description.
5. To confirm your change, tap the arrow in the upper right corner.

How do you queue on YouTube?

Hopefully, this feature will be synced across your mobile devices going forward, and that an equivalent functionality comes to Android and iOS….How to enable YouTube queue:

1. Visit YouTube.com/new.
2. Navigate to “Create a queue” experiment.
3. Click “Try it out”
4. Make sure you’re signed into YouTube when browsing videos.

Can you save a queue on YouTube?

Keep in mind that your queue won’t save after you’ve closed your browser. If you want to continue watching later, we recommend that you save videos to your Watch Later playlist.

How do I add elements to my queue?

The add(E e) method of Queue Interface inserts the element passed in the parameter to the end of the queue if there is space. If the Queue is capacity restricted and no space is left for insertion, it returns an IllegalStateException. The function returns true on successful insertion.

What does add to queue mean on YouTube?

“Add to Queue” was a YouTube feature that enabled you to set up a list of videos to watch in a particular order, rather than have to manually choose the next video each time a clip ended. This feature was also known as quicklist. The same functionality is now used as a shortcut to produce a playlist.

What does it mean add to queue?

Adding to queue means there should be something playing first before the queue is created. Try playing one song then add another music to the queue. Don’t pick another song, just wait for the current song to finish. You add songs one after the other. So the last song you have added will play at the end.

What does queue mean?

(Entry 1 of 2) 1 : a braid of hair usually worn hanging at the back of the head. 2 : a waiting line especially of persons or vehicles. 3a : a sequence of messages or jobs held in temporary storage awaiting transmission or processing.

How do you save a YouTube queue?

If you have this extension enabled, you should see a “Save Queue” button next to the “Clear Queue” button. When you press it, your queue will be converted to an untitled playlist.

How do you play queue on YouTube app?

Add music to your queue

1. Find an album or song you want to play.
2. Select the Menu icon. > Add to queue.
3. Use the buttons on the bar at the bottom of the screen to control playback, shuffle songs, or repeat songs.
4. To see the full list of songs, select the music note icon .

Is YouTube better than Spotify?

If you’re into videos, YouTube Music is the better option for you. But if podcasts are more of your thing, Spotify is more up your alley.