Merge two arrays in a zipper-like fashion.

Take a string of comma separated numbers and print out the sum.

Given two strings of equal length, figure out if one is a scramble of the other.

Take a roman numeral(<1000 in value) and print its corresponding value in the decimal system of numbers.

Just take any given string and output it in reverse, pretty easy, right?

Take a list of integers and print it after sorting it in descending order.

Take a string of numbers and output the one which appears the most.