Given a matrix M and two index vectors a and b, return a row vector x where x(i) = M(a(i),b(i)).
radius of a spherical planet
Project Euler: Problem 1, Multiples of 3 and 5
2 b | ~ 2 b
Angle between Two Vectors
Test if two numbers have the same digits
Reference Index Number
Create a patchwork matrix
Key Generation for Solitaire Cipher
Fair Scoring for Cody
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