/* Given a string, if one or both of the first 2 chars is 'x', return the * string without those 'x' chars, and otherwise return the string unchanged. * This is a little harder than it looks. */ public String withoutX2(String str) { if(str.length() == 1 && str.charAt(0) == 'x') return ""; if(str.length() >= 2) { if(str.charAt(0) == 'x' && str.charAt(1) == 'x') { return str.substring(2); } else if(str.charAt(0) == 'x') { return str.substring(1); } else if(str.charAt(1) == 'x') { return str.charAt(0) + str.substring(2); } } return str; }