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).
Find the longest sequence of 1's in a binary sequence.
How many trades represent all the profit?
Replace multiples of 5 with NaN
length of a vector
The Goldbach Conjecture, Part 2
Back and Forth Rows
Remove the polynomials that have positive real elements of their roots.
Find all elements less than 0 or greater than 10 and replace them with NaN
Indexed Probability Table
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