length!! and not "not isempty"... good point!
The Hitchhiker's Guide to MATLAB
Given a window, how many subsets of a vector sum positive
Set some matrix elements to zero
MATCH THE STRINGS (2 CHAR) very easy
Decrypt the cypher using XOR encryption (for beginners)
BLOCK x3 (Version 4)
Longest Collatz Sequence
Chess ELO rating system
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