public class StringHelper {
    private String str;

    public StringHelper() {
    }

    public static String meshStrings(String str1, String str2) {
        String mesh_str = "";

        for(int i = 0; i < str1.length(); i++) {
            mesh_str += str1.charAt(i);

            if (str2.length() > i) {
                mesh_str += str2.charAt(i);
            }
        }

        if (str2.length() > str1.length()) {
            mesh_str += str2.substring(str1.length());
        }

        return mesh_str;
    }

    public static String replaceVowelsWithOodle(String str) {
        String new_str = "";

        for(int i = 0; i < str.length(); i++) {
            char c = str.charAt(i);
            if (c == 'a' || c == 'A' || c == 'e' || c == 'E' || c == 'i' || c == 'I' || c == 'o' || c == 'O' || c == 'u' || c == 'U' ) {
                new_str += "oodle";
            } else {
                new_str += c;
            }
        }

        return new_str;
    }

    public static double weight(String str) {
        double weight = 0.0;

        for (int i = 0; i < str.length(); i ++) {
            char c = str.charAt(i);
            if (c == 'a' || c == 'A' || c == 'e' || c == 'E' || c == 'i' || c == 'I' || c == 'o' || c == 'O' || c == 'u' || c == 'U' ) {
                weight += 2.5;
            } else {
                weight += 3.4;
            }
        }

        return weight;
    }
}