zamiana00001

public class Funkcje {

public static String zmiana(String text, String fraza) {
        String text1 = "";
        String text2 = "";
        String text3 = "";
        int num;
        for (int i = 0; i < text.length(); i++) {
            text2 += text.charAt(i);
            if (Character.isWhitespace(text.charAt(i))) {
                text1 += " ";
                //System.out.println(text2);
                if (text2.equals(fraza)) {
                    for (int j = 0; j < fraza.length(); j++) {
                        text3 += Character.toUpperCase(text2.charAt(i));
                    }
                    //System.out.println(text3);
                    text1 += text3;
                    text3 = "";
                }
                text2 = "";
            } else if (Character.isDigit(text.charAt(i))) {
                num = text.charAt(i) - '0';
                num += 1;
                text1 += num;
            } else {
                text1 += text.charAt(i);

            }
        }
        return text1;
    }

    public static void main(String[] args) {
        System.out.println(zmiana("Ala ma 2 koty i 9 rybek, ma rowniez  psa", "ma"));

    }

}