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).
surface of a spherical planet
Number of 1s in the Binary Representation of a Number
Reverse the Words (not letters) of a String
Matrix which contains the values of an other matrix A at the given locations.
Flip the vector from right to left
Add two numbers
The Goldbach Conjecture, Part 2
Renaming a field in a structure array
Remove all the words that end with "ain"
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