Interview pattern recognition
10 Must-Know Time Complexity Patterns
Live visualizations of the classic cheat sheet — plus ten patterns the graphic left out. Open any row for when this method wins, space cost, and three best use cases.
10 core patterns10 extra patternslooping animations
PatternVisualizationBig-O
Not on the original sheet
Ten more patterns you actually meet
The Instagram graphic stops at permutations. Interviews also throw √n bounds, cubic DP, sliding windows, heaps, graphs, and amortized growth — each with its own animation below.
PatternVisualizationBig-O
Growth lab
Watch the curves pull apart
Drag n. Bars use a log scale so factorial and exponential still fit on screen — in real time they would already be off the page.
1 → 16 · log-scaled bars
O(1)
1.0
O(log n)
3.0
O(√n)
2.8
O(n)
8.0
O(n log n)
24
O(n²)
64
O(n³)
512
O(2ⁿ)
256
O(n!)
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