package string; import java.util.Scanner; public class StringDemo { public static void main(String[] args) { StringDemo demo = new StringDemo(); Scanner input = new Scanner(System.in); String str = input.nextLine(); demo.reverseString(str); String repStr = str.replace("c", "v"); System.out.println(repStr); } String reverseString(String string){ String str = string; System.out.println(str.codePointCount(1, 4)); StringBuilder rev = new StringBuilder(); for (int i = str.length() - 1 ; i >= 0 ; i--) { rev.append(str.charAt(i)); } System.out.println(rev); return rev.toString(); } }