Guess the password or break the lock.
And this problem is much easier than others you solved here!! ;-)
Sorry, I was tempted by the 'break the lock' part... :)
Specific Element Count
Wind outward from the center ...
Compare two input matrices
Concatenate two strings
Polite numbers. Politeness.
Alternative Scoring. Create an incremental spiral.
Have you solved this problem?
Which permutation is it?
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