the test suits are all passed , but the mathworks net tells its wrong. and the size is '-1'. i use the datenum function.
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Sum the elements in either diagonal of a square matrix
Duplicate a character
Do you like your boss?
Is this triangle right-angled?
Evaluating a polynomial
Find the peak 3n+1 sequence value
Word Counting and Indexing
Swap the first and last columns
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