Remove the air bubbles
Poker Series 04: isFlush
Numbers with prime factors 2, 3 and 5.
Replace all zeros and NaNs in a matrix with the string 'error'
Find best placement for ordered dominoes (harder)
Project Euler: Problem 3, Largest prime factor
Project Euler: Problem 2, Sum of even Fibonacci
Steal, Share, or Catch
Project Euler: Problem 6, Natural numbers, squares and sums.
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