Character Length Encoding

Problem Name : Character Length Encoding. Problem description : Given an input string, write a function that returns the character length encoded string for the input string. For example, if the input string is “aabbbccccddddd”, then the function should return “a2b3c4d5". Note that in the above example a repeated 2 times, b repeated 3 times, c repeated 4 times and d repeated 5 times, So the e