Ruby | SizedQueue deq() function

The deq() is an inbuilt function in Ruby returns the element in the front of the SizedQueue and removes it from the SizedQueue.

Syntax: sq_name.deq()

Parameters: The function does not takes any element.

Return Value: It returns the first element which is at the front of the SizedQueue and removes it from the SizedQueue.

Example 1:

#Ruby program for deq function in SizedQueue

#Create a new SizedQueue q1
q1 = SizedQueue.new(2)

#push 5
         q1.push(5)

#push 6
             q1.push(6)

#Prints the top - most element and also pops it
                 puts q1.deq

                     puts q1.deq

Output:

5
6

Example 2:

#Ruby program for deq function in SizedQueue

#Create a new SizedQueue q1
q1 = SizedQueue.new(2)

#push 12
         q1.push(12)

#push 21
             q1.push(21)

#Prints the top - most element and also pops it
                 puts q1.deq

                     puts q1.deq

Output:

12
21

Reference: https://devdocs.io/ruby~2.5/sizedqueue#method-i-deq