Fixing loop range bug in pseudocode #31
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when length = 2 (first iteration of outer loop), start = N-1 (last iteration of middle loop), and len1 = N-1 (last iteration of inner loop),
second index of the reference to P which is start + len1 equals
2*N - 2, that is out of the array bounds for N > 1
I have successfully implemented CYK in Java using this amended pseudocode. Without the amendment you get a NullPointerException
Credit to izard for bug discovery back in 2012