Ruby | SizedQueue shift() function
The shift() is an inbuilt function in Ruby returns the element in the front of the SizedQueue and removes it from the SizedQueue.
Syntax: sq_name.shift()
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 shift() 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 shifts it puts sq1.shift puts q1.shift |
Output:
5 6
Example 2:
#Ruby program for shift 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 shifts it puts sq1.shift puts sq1.shift |
Output:
12 21
Reference: https://devdocs.io/ruby~2.5/SizedQueue#method-i-shift
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