The length() is an inbuilt function in Ruby returns the current length of the SizedQueue or the number of objects present in it. It does not returns the pre-defined size of the SizedQueue
Syntax: sq_name.length()
Parameters: The function does not takes any parameter.
Return Value: It returns the number of elements in the SizedQueue.
Example 1:
#Ruby program for length() function in SizedQueue #Create a new SizedQueue q1 sq1 = SizedQueue. new (2)
#pushes 5 sq1.enq(5)
#pushes 6 sq1.enq(6)
#Prints the length puts sq1.length
#Pops the element sq1.pop
#Prints the length puts sq1.length
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Output:
2 1
Example 2:
#Ruby program for length() function in SizedQueue #Create a new SizedQueue q1 sq1 = SizedQueue. new (3)
#Prints the length puts sq1.length
#pushes 5 sq1.enq(5)
#pushes 6 sq1.enq(6)
#pushes 7 sq1.enq(7)
#Prints the length puts sq1.length
#Pops the element sq1.pop
#Prints the length puts sq1.length
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Output:
0 3 2
Reference: https://devdocs.io/ruby~2.5/sizedqueue#method-i-length