Mine

	public static void salaa(StringBuffer salattava) {						char [] kirjaimet = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};		char [] numerot = { '1','2','3','4','5','6','7','8','9','10', '11','12','13','14','15','16','17','18','19','20','21','22','23','24','25'};						int i = 0;		int n = 0;						while ((salattava.length()>=0)&&(salattava.length()<=i)) {			while ((n>=0)&&(n<=kirjaimet.length)) {				if (salattava(charAt[i]).equals(kirjaimet [n])) {					salattava = replace(i,numerot [n]);				}						n=n+1;			}				i=i+1;		}									 	} }