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📖 View Subject LaTeX Notes →CS101Python Programming & Algorithmic Thinking • Intermediate
List Indexing & Dictionary Hash Buckets
Python List Layout in Contiguous Memory
len(items) == 3[0]
"Apple"
[-3][1]
"Banana"
[-2][2]
"Cherry"
[-1]Green = 0-Based Index (
items[0])Orange = Negative Index (items[-1])Mathematical Model
Theory & Governing Equations
Analytical principles modeled in this interactive visualizer:
Index Mapping: -k ⟺ n - k, Bucket = hash(key) mod m
Key Exam Concepts:
- Python lists are contiguous arrays of pointers supporting O(1) random access and amortized O(1) appends.
- Negative indices access items relative to list end without calculating
len(lst) - 1manually. - Dictionaries map keys to hash buckets with average O(1) lookup time.
⚡ Browser-Native Runtime
This simulator executes at 60 FPS directly in your browser using client SVG, HTML5 Canvas, and React state.