import java.util.*; public class Main { public static void main(String[] args) { var numbers = new int[]{ 6, 1, 2, 5, 4, 8, 7, 3, 9 }; System.out.println(Arrays.toString(numbers)); numbers = Arrays.stream(numbers) .boxed() .sorted((n, m) -…

public class Sample { public static void main(String[] args) { var string = "123"; var result = string.chars() .map(c -> c - '1' + 'A') .collect(StringBuilder::new, (sb, c) -> sb.append((char)c), StringBuilder::append) .toString(); System.…