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Java Exercises: Accepts an integer (n) and computes the value of n+nn+nnn

Java Basic: Exercise-44 with Solution

Write a Java program that accepts an integer (n) and computes the value of n+nn+nnn.

Sample Solution:

Java Code:

import java.util.Scanner;
public class Exercise44 {
 public static void main(String[] args) {

  int n;
  char s1, s2, s3;
  Scanner in = new Scanner(System.in);
  System.out.print("Input number: ");
  n = in .nextInt();
  System.out.printf("%d + %d%d  + %d%d%d\n", n, n, n, n, n, n);
 }
}

Sample Output:

Input number: 5                                                        
5 + 55  + 555

Flowchart:

Flowchart: Java exercises: Accepts an integer (n) and computes the value of n+nn+nnn

Java Code Editor:

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Java: Tips of the Day

getEnumMap

Converts to enum to Map where key is the name and value is Enum itself.

public static <E extends Enum<E>> Map<String, E> getEnumMap(final Class<E> enumClass) {
    return Arrays.stream(enumClass.getEnumConstants())
            .collect(Collectors.toMap(Enum::name, Function.identity()));
}

Ref: https://bit.ly/3xXcFZt