[Challenge] Create something Fan

Question

hello Every one i suggest Challenge For You

input:hello john how are you

output:hello%20john%20how%20are%20you

Answer 1

String s = "hello john how are you";
System.out.print(s = s.replaceAll(" ", "%20"));

Answer 2

The challenge is a little bit vague and require more test cases.

Are you looking for somebody to roll their own url encoder?