Find The Difference

January 15, 2019

Today’s question comes from a programming student:

You are given two strings s and t that consist only of lower-case letters. String t was created by adding one letter chosen at random to string s, then shuffling the resulting string. Find the letter that was added to t. For instance, the difference between the two strings “abcdef” and “bfxdeac” is the character “x”.

Your task is to write a program to find the random letter that was added to the string. When you are finished, you are welcome to read or run a suggested solution, or to post your own solution or discuss the exercise in the comments below.

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