int buyukHarfBaslangic = 65;
        int kucukHarfBaslangic = 97;
        int toplamharfsayisi = HARFSAYISI;
        int harfsayac =0;
        while(harfsayac<=toplamharfsayisi){
        
        if(harfsayac%2 == 0){
        if(buyukHarfBaslangic >=65 && buyukHarfBaslangic <= 90) {
            char a = (char) buyukHarfBaslangic;
            System.out.println(a);
            buyukHarfBaslangic++;
        }
        }else{
        if(kucukHarfBaslangic >=97 && kucukHarfBaslangic <= 122) {
            char b = (char) kucukHarfBaslangic;
            System.out.println(b);
            kucukHarfBaslangic++;
        }
        }
        harfsayac++;
        }