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Linear collections

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These structures organize elements in sequences or constrained access orders. Decide whether you need indexing, LIFO, FIFO or text processing, then compare operations and costs.

Lessons and practical examples

Section titled “Lessons and practical examples”

  • Arrays: How indexing, storage and traversal work.

  • Queues: Learn the order of operations with a hands-on example.

  • Stacks: Learn the order of operations with a hands-on example.

  • Strings: Work with immutable text, indexing and Unicode.

How to study this section

Section titled “How to study this section”

Start with one concept, work through a small example, and verify your prediction. Follow linked topics when a prerequisite or related idea needs more explanation.