May I ask what is the definition of Nilpotent matrix. I suppose that is A^k =0 for some k? If I am right, then 0 must be an eigenvalue of A, then there is some issues for the test problems.
@Ling Liang , take some tolerance while checking the equality of eigen value with zero.
Word Counting and Indexing
Distance walked 1D
Least common multiple of many numbers
Basic arrays operations.
07 - Common functions and indexing 4
Sum of series V
Sum of series VI
Sum of series I
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