Java Exercises: Program to start with an integer n, divide n by 2 if n is even or multiply by 3 and add 1 if n is odd, repeat the process until n = 1
Java Basic: Exercise-86 with Solution
Write a Java program start with an integer n, divide n by 2 if n is even or multiply by 3 and add 1 if n is odd, repeat the process until n = 1.
Sample Solution:
Java Code:
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
System.out.println("Input the value of n: ");
Scanner in = new Scanner(System.in);
int n = in.nextInt();
while (n != 1) {
if (n % 2 == 0) {
n = n / 2;
}
else {
n = (3 * n + 1) / 2;
}
}
System.out.println("\nValue of n = "+n);
in.close();
}
}
If input 5
Sample Output:
Input the value of n: 9 Value of n = 1
Flowchart:

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Java: Tips of the Day
countOccurrences
Counts the occurrences of a value in an array.
Use Arrays.stream().filter().count() to count total number of values that equals the specified value.
public static long countOccurrences(int[] numbers, int value) { return Arrays.stream(numbers) .filter(number -> number == value) .count(); }
Ref: https://bit.ly/3kCAgLb
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