Complete the method/function so that it converts dash/underscore delimited words into camel casing. The first word within the output should be capitalized only if the original word was capitalized.

Examples

toCamelCase("the-stealth-warrior"); // returns "theStealthWarrior" 
toCamelCase("The_Stealth_Warrior"); // returns "TheStealthWarrior"

Use

$stringprocessor = new StringProcessor();
$result=$stringprocessor->toCamelCase("hello_world"));
//$result ==> helloWorld