The size() is an inbuilt function in Ruby returns the current size of the Queue or the number of objects present in it.
Syntax: q_name.size()
Parameters: The function does not takes any parameter.
Return Value: It returns the number of elements in the queue.
Example 1:
#Ruby program for size() function in Queue #Create a new QUEUE q1 q1 = Queue.new
#pushes 5 q1.enq(5)
#pushes 6 q1.enq(6)
#Prints the size puts q1.size
#Pops the element q1.pop
#Prints the size puts q1.size
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Output:
2 1
Example 2:
#Ruby program for size() function in Queue #Create a new QUEUE q1 q1 = Queue.new
#Prints the size puts q1.size
#pushes 5 q1.enq(5)
#pushes 6 q1.enq(6)
#pushes 7 q1.enq(7)
#Prints the size puts q1.size
#Pops the element q1.pop
#Prints the size puts q1.size
|
Output:
0 3 2
Reference: https://devdocs.io/ruby~2.5/queue#method-i-size