Given a string representing the inventory of a fruit shop, calculate the frequency of each character in the string. The inventory list may contain fruit names, quantities, and additional notes. Ignore ...

The goal of this exercise is to convert a string to a new string where each character in the new string is "(" if that character appears only once in the original string, or ")" if that character ...

The awk command can make it easy to remove duplicate characters from a string even when those characters aren’t sequential, especially when the process is turned into a script. First, the awk command ...