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Ruby | SizedQueue pop() function
  • Last Updated : 09 Jan, 2020

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

Syntax: sq_name.pop()

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 pop() function in SizedQueue
  
#Create a new SizedQueue q1
sq1 = SizedQueue.new(2)
  
#push 5
          sq1.push(5)
  
#push 6
              sq1.push(6)
  
#Prints the top - most element and also pops it
                  puts sq1.pop
  
                      puts sq1.pop

Output:

5
6

Example 2:




#Ruby program for pop function in SizedQueue
  
#Create a new SizedQueue q1
sq1 = SizedQueue.new(2)
  
#push 12
          sq1.push(12)
  
#push 21
              sq1.push(21)
  
#Prints the top - most element and also pops it
                  puts sq1.pop
  
                      puts sq1.pop

Output:

12
21

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




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