input = 123456789, output = 1+2+3+4+5+6+7+8+9 = 45
Does the size of the solution include the size of functions that have been called?
Find the sum of the elements in the "second" diagonal
Back to basics 14 - Keywords
Insert zeros into vector
03 - Matrix Variables 5
07 - Common functions and indexing 6
determine the sum of the squares
concatenate the elements
No more zeros
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