I think it only takes 5 weighings when N=128. Am I incorrect?
agree 5 weighing for N=128 (worst case scenario you reduce to 43 15 5 2 1 after each consecutive weighing)
the last test case provided by the author is wrong: should be 5 since log(128)/log(3) < 5.
The problem is that the author do not specify an strategy. And as mentioned, dividing by 3 yields a better strategy than 6 weightings for 128. But, my guess is that the author counted the number of divisions instead of the number of weightings 128->[42 42 43] -> [14 14 14; 14 14 15]->[5 5 4; 5 5 5]->[2 2 0; 2 2 1]->[1;2]->1.
Correct the test suite
Back to basics 15 - Benchmark
Reindex a vector
intersection of matrices
Right Triangle Side Lengths (Inspired by Project Euler Problem 39)
Create an n-by-n null matrix and fill with ones certain positions
Accessing elements on the diagonal
Generate pi using logarithm
Find the solution of algebraic equation
Reverse the elements of an array
Find out missing number from a vector of 9 elements
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