You added a few primes in each iteration... Very nice!
Increment a number, given its digits
Angle between two vectors
Back to basics 25 - Valid variable names
How many trades represent all the profit?
Generate a random matrix A of (1,-1)
Find indices of diagonal elements
Return a list sorted by number of consecutive occurrences
Longest Collatz Sequence
Recycled Numbers (CodeJam Qualification Round 2012)
Add more zeros
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