Here are 10 key data structures we use every day:

• List: Keep your Twitter feeds

• Stack: Support undo/redo of the word editor

• Queue: Keep printer jobs, or send user actions in-game

• Hash Table: Caching systems

• Array: Math operations

• Heap: Task scheduling

• Tree: Keep the HTML document, or for AI decision

• Suffix Tree: For searching string in a document

• Graph: For tracking friendship, or path finding

• R-Tree: For finding the nearest neighbor

• Vertex Buffer: For sending data to GPU for rendering