what's the "str2num" mean?
str2num means "convert string to number"; even more cryptic is the fact that "str2num 1:10" is equivalent to "str2num('1:10')" (Matlab allows you to omit the single quotes and parentheses when using functions that take character strings as arguments).
Back to basics 23 - Triangular matrix
Wrapping the Tower of Pisa
Matrix with different incremental runs
Find nth maximum
Model a falling body
Longest Divisor Run
Clean the List of Names
Word Counting and Indexing
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