Implement simple rotation cypher
Remove from a 2-D matrix all the rows that contain at least one element less than or equal to 4
Get the elements of diagonal and antidiagonal for any m-by-n matrix
sum of non-primes
Sum the Digits of a Number
The Generalized-N Eggs Problem
Expand 10^n to Powers of 4
Response of First Order Control Systems
Let's Make A Deal: The Player's Dilemma
Toads and Frogs Puzzle 2
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