Ruby | Queue << function

The <<() is an inbuilt function in Ruby inserts the element in the queue.

Syntax: q_name << element Parameters: The function takes the element to be inserted into the queue. Return Value: It inserts the element into the queue.

Example 1: Output:

5
6

Example 2: Output:

10
12
13

Reference: https://devdocs.io/ruby~2.5/queue#method-i-3C-3C