replace nan values with the average of two neighbour non-nan value iteratively as follow;
x = [2; 4; 6; nan; nan; nan; 10];
x = [2; 4; 6; 8; nan; nan; 10];
x = [2; 4; 6; 8; 9; nan; 10];
x = [2; 4; 6; 8; 9; 9.5; 10];
Distance walked 2D
Eight Queens Solution Checker
How long is the longest prime diagonal?
Create an 'arrow-head" matrix
Given a 4x4 matrix, swap the two middle columns
Produce the following matrix
Go back n times
Bridge and Torch Problem - Minimum time
Dealing with correlation results!
Lunar Arithmetic (Multiplication)
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