Programming Concepts Beginner

What is Data Structure?

A way of organizing and storing data in a computer so it can be accessed and modified efficiently.

Data structures define how data is stored and accessed. Arrays provide indexed access. Linked lists allow efficient insertions. Hash tables enable O(1) lookups. Trees organize hierarchical data. Graphs model complex relationships.

Choosing the right data structure dramatically affects performance. Stacks (LIFO) and queues (FIFO) manage ordered operations. Heaps efficiently find min/max values. Tries optimize string searching.

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Related Terms

A programming technique where a function calls itself to solve a problem by breaking it into smaller subproblems.

The implied cost of additional rework caused by choosing a quick solution now instead of a better approach that would take longer.

Code that is easy to read, understand, and maintain — following consistent conventions, meaningful naming, and single-responsibility functions.

The ability of a program to manage multiple tasks that can make progress during overlapping time periods.

SOLID Principles Breakdown

Five object-oriented design principles that guide developers in creating maintainable, flexible, and scalable software systems.

Composition over Inheritance

A design principle favoring object composition (has-a relationships) over class inheritance (is-a relationships) for code reuse.

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