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Java: Input 5 numbers from keyboard and find their sum and average

Java Conditional Statement: Exercise-12 with Solution

Write a program in Java to input 5 numbers from the keyboard and find their sum and average.

Test Data
Input the 5 numbers: 1 2 3 4 5

Pictorial Presentation:

Java conditional statement Exercises: Input 5 numbers from keyboard and find their sum and average

Sample Solution:

Java Code:

import java.util.Scanner;
public class Exercise12 {

    
  public static void main(String[] args)

{       
    int i,n=0,s=0;
	double avg;
	{
	   
        System.out.println("Input the 5 numbers : ");  
         
	}
		for (i=0;i<5;i++)
		{
		    Scanner in = new Scanner(System.in);
		    n = in.nextInt();
		    
  		s +=n;
	}
	avg=s/5;
	System.out.println("The sum of 5 no is : " +s+"\nThe Average is : " +avg);
 
}
}

Sample Output:

Input the 5 numbers :                                                                                         
1                                                                                                     
2                                                                                                     
3                                                                                                     
4                                                                                                     
5                                                                                                     
The sum of 5 no is : 15                                                                                       
The Average is : 3.0

Flowchart:

Flowchart: Java Conditional Statement Exercises - Input 5 numbers from keyboard and find their sum and average

Java Code Editor:

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Java: Tips of the Day

IsPowerOfTwo

Checks if a value is positive power of two.

To understand how it works let's assume we made a call IsPowerOfTwo(4).

As value is greater than 0, so right side of the && operator will be evaluated.

The result of (~value + 1) is equal to value itself. ~100 + 001 => 011 + 001 => 100. This is equal to value.

The result of (value & value) is value. 100 & 100 => 100.

This will value the expression to true as value is equal to value.

public static boolean isPowerOfTwo(final int value) {
    return value > 0 && ((value & (~value + 1)) == value);
}

Ref: https://bit.ly/3sA5d4I

 





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