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).
Determine the number of odd integers in a vector
Matlab Basics - Absolute Value
Word Counting and Indexing
Back and Forth Rows
Remove any row in which a NaN appears
Find the two-word state names
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