A queue is like a line at a restaurant. It’s “first in, first out” (FIFO), which means that the item that was put in the queue longest ago is the first item that comes out. “First come, first served.”
Most use-cases for a queue are involved with building or utilizing other data structures. One example could be in breadth-first traversal of a tree.
Queues have two main methods:
They can also include other utility methods:
Are you ready to take on some more advanced data structures? Next up is the binary search tree!
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