@Ramon, if you are submitting a question on Cody for everybody to solve, it is recommended you put atleast 3 test suites, mostly so that it encourages people to learn and not hard code solutions.
Thanks, @Dyuman. There are now 4 test suites.
-a+(1-(-1)^(n+1))/2 will be negative in the 4th test. I believe it should be: index(a-(1-(-1)^(n+1))/2).
This works fine in my MATLAB software. But not here.
Any comments, please?
function n = index(a)
for idx = 1:1000
b = idx*((-1)^(idx^3+1));
Because you are not doing what the question is asking
Project Euler: Problem 4, Palindromic numbers
Getting the indices from a matrix
Basic arrays operations.
Is the input divisible by 3?
Easy Sequences 23: Hat Guessing Game!
Easy Sequences 34: Modified Pascal's Triangle
Easy Sequences 39: Perfect Squares in Pascal's Triangle
Easy Sequences 36: Hyperbolic Lattice Points
Easy Sequences 8: Triangles with integer sides and prime perimeters
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