matrix in test case 3 is magical?
sum first circle=73
sum second circle =61....
The test case #5 in is not a magic circle because its radii are not equal (column 3 should be made of two 69s as are all the others, but instead they are 82 and 56). Please fix the test suite whenever possible.
Remove any row in which a NaN appears
Determine if a Given Number is a Triangle Number
Doubling elements in a vector
remove nans fast
Convert vector datasets to plot with imagesc instead of scatter
is the number happy?
Tony's trick for duplicating an mx1 vector n times
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