Please solve this java coding bat question:

http://codingbat.com/prob/p297906

Write a function to encode a string of repeating letters and return the encoded string where repeated chars are indicated with a number that shows how many times it repeats For example, "aaaaa" returns "a5" "aabbbbbccc" returns "a2b5c3"

encode("ab") ? "a1b1" encode("aabb") ? "a2b2" encode("aaaaaaaaaa") ? "a10"

public String encode(String s) { }