Doddy -- I think the last two columns of y_correct in problem 4 are incorrect.
@William , I think it is correct.
Binbin -- Yes, I see. It's just a more difficult problem than I thought it was!
@William， Yes. It is hard to guess the author's thoughts
Arrange Vector in descending order
Calculate the Number of Sign Changes in a Row Vector (No Element Is Zero)
Max of a Vector
Area Conversion 1
Concatenated Consecutive Prime
Number Puzzle - 103
Splitting Hexagon - Problem the third
Mass Conversion 1
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