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Floyd's sampling algorithm

Also called Floyd's algorithm for random subsets.

Picks a uniform k-subset of {0..n-1} with exactly k random draws, using a hash set for O(k) space.

Picks a uniform k-subset of {0..n-1} with exactly k random draws, using a hash set for O(k) space.

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The build computes these levels from the evidence in the repository. Each row says what the next level needs. Read what the levels mean.

LadderLevelWhat the next level needs
Human proofH0 no proof
  • add a proof in proofs/ (06.5)
LeanL0 no Lean part
  • name a Lean module in the lean field (07)
VisualV0 none
  • add viz/scene.ts or a figure (10)
WritingW0 stub
  • the section The problem
  • pseudocode in The algorithm
  • complexity claims in the front matter
  • one source with a locator

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