Ruby | Queue deq() function
The deq() is an inbuilt function in Ruby returns the element in the front of the queue and removes it from the queue.
Syntax: q_name.deq()
Parameters: The function does not takes any element.
Return Value: It returns the first element which is at the front of the queue and removes it from the queue.
Example 1:
#Ruby program for deq function in Queue #Create a new QUEUE q1 q1 = Queue.new #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 Queue #Create a new QUEUE q1 q1 = Queue.new #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/queue#method-i-deq
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