K2 Adhoc1

public class Adhoc2 {
    public static void main(String[] args) {
        String str = "Ev4o t3i b2aki 3pa 4se ig3raa2j mal4o";
        String novi = "";
        for (int i = 0; i < str.length() ; i++) {
           if(str.charAt(i) != '2' && str.charAt(i) != '3' && str.charAt(i) != '4'){
            System.out.print(novi + str.charAt(i));
           }
            if(str.charAt(i) == '2' ){
                System.out.print(novi + str.charAt(i + 1));
            }
            if(str.charAt(i) == '3'){
                System.out.print(novi + str.charAt(i + 1));
                System.out.print(str.charAt(i + 1));
            }
            if(str.charAt(i) == '4'){
                System.out.print(novi + str.charAt(i + 1));
                System.out.print(novi + str.charAt(i + 1));
                System.out.print(novi + str.charAt(i + 1));
            }
        }

    }
}