Find the numeric mean of the prime numbers in a matrix.
Extract leading non-zero digit
Get the area codes from a list of phone numbers
Project Euler: Problem 4, Palindromic numbers
Fill a zeros matrix
Geometry: Find Circle given 3 Non-Colinear Points
Criss-Cross Verification: NHL
Minimum Distance between two N-sided Polygons
GJam March 2016 IOW: Passwords and the Block Set
GJam 2017 Kickstart: Parentheses (Small)
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