2D Array Traversal
Deconstruct nested loops covering Row-Major, Column-Major, and boundary tracing across a 2D integer matrix.
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Binary Search Tree
Construct dynamic 2D Binary Search Trees element by element. Run animated depth-first traversals (In-order, Pre-order, Post-order) stepping through the recursive call stack.
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Array vs ArrayList Memory Resizing
Witness the internal array backing an ArrayList dynamically resize. Compare fixed memory bounds against O(N) copy operations when capacity is exceeded.
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Big-O Complexity
Analyze algorithm efficiency using Big-O notation to describe time and space complexity. Compare O(1) constant time, O(log n) logarithmic, O(n) linear, O(n log n) linearithmic, O(n²) quadratic, and O(2ⁿ) exponential growth rates. Visualize how input size affects runtime, understand best/average/worst case scenarios, and learn to identify complexity by analyzing loops, recursion depth, and data structure operations.
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Object Orientation Stack vs Heap
Eliminate aliasing bugs by visualizing Java's Stack vs Heap memory. See how references map to object instances and primitives copy by value.