what does regular expression do in this solution?
just for decrease solution size?
Determine if input is odd
Which values occur exactly three times?
Sum of diagonal of a square matrix
Return the first and last characters of a character array
Generalised Hamming Number
Sums of Distinct Powers
How brilliant are you?
If you prick us, do we not bleed?
Singularity v5 (with apologies to the true hack masters)
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