LIFO

Definitions

1. Last In, First Out — an ordering principle where the most recently added element is the first to be removed. LIFO is the fundamental behavior of a stack data structure and is how function call frames, undo histories, and back-button navigation work.

   In plain English: A rule where the last thing added is the first thing taken out, like a stack of plates where you always grab the top one.

   Example: "The undo stack is LIFO, so pressing Ctrl+Z always reverts the most recent action first."

Related Terms

• Hash Map
• Hash Ring
• Hash Set
• Hashing Algorithm
• Knuth
• Linked List
• Merge Sort
• Priority Queue
• Quick Sort
• Round Robin
• Search Algorithm
• Search Tree
• Sorted Set
• Tree
• Balanced Tree
• Binary Search Tree
• Bit Field
• BST
• Bucket Sort
• Circular Buffer
• Concurrent Map
• Concurrent Queue
• Concurrent Set
• Connected Component