Cоnsider the fоllоwing method. public stаtic String chаngeStr(String str) { String result = ""; for (int i = str.length() - 1; i >= str.length() / 2; i -= 2) { result += str.substring(i, i + 1); } return result; } Whаt value is returned as a result of the method call changeStr("12345") ?