Check if matrix A is nilpotent.
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.
Back and Forth Rows
Remove white space from the string
Next Higher Power of B
Test if two numbers have the same digits
Find nth maximum
Sum of series IV
Sum of series I
Sum of series III
Sum of series VI
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