Nice idea, but the test cases are a bit confusing. Why do you add one space before and after '(', but none after ')' and three between the letters and the '+' symbol?
Thanks for the input :)
The reason I add one before '(' is because there is a '2' before it, which is part of the term. The ones between the letters and the '+' symbol are because spaces are characters, too.
this "expand" reminds me a famous hilarious joke in classroom. but I guess this is the point...
Read a column of numbers and interpolate missing data
Number of digits in an integer
Length of a short side
Matrix multiplication across rows
time of day
Persistence will not help you solve this problem.
Subtract integers and add doubles
nanoseconds passed today
calculate the day of the year from a date string.
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