If I'm reading the problem statement right, I think either the answer to test case 2 should be 867 (123^3 = 1860867.) or n=2 (123^2=15129).
James, you are correct. Problem statement and test suite have been fixed.
Multiply a column by a row
Rotate a Matrix
Determine Whether an array is empty
Convert from Base 10 to base 5
Big numbers, repeated least significant digits
Generate a NaN...on purpose
Given the name from the legend, return the handle
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