Question

Write a program that uses a for statement to calculate and display the sum of all even numbers between 5 and 11 inclusive on the screen.Write statements that assign random integers to the variable n in the following ranges: Use the random function to generate the numbers. Put the statements in a Java Program and run it.

a) 1 ≤ n ≤ 65
b) 1 ≤ n ≤ 850
c) 0 ≤ n ≤ 81
d) 1000 ≤ n ≤ 2035
e) –11 ≤ n ≤ 40

Answer 1

A Java program is provided to calculate the sum of even numbers between 5 and 11 inclusive and to generate random integers in the specified ranges using the Random class.

Step-by-step explanation:

Firstly, the solution to the student's initial query of calculating the sum of all even numbers between 5 and 11 inclusive can be done with a simple Java program using a for loop. Since the even numbers in this range are 6, 8, and 10, we simply need to sum these numbers.

To answer the other part of the question regarding random number generation in Java, we need to make use of the Random class provided in Java's utility library. Below is a Java program that includes both parts:

import java.util.Random;
public class RandomNumberGenerator {
public static void main(String[] args) {
// Initialize sum
int sum = 0;
// Calculate sum of all even numbers between 5 and 11 inclusive
for (int i = 6; i <= 10; i += 2) {
sum += i;
}
System.out.println("Sum of even numbers between 5 and 11: " + sum);

// Initialize random number generator
Random random = new Random();
// Generate random integers in different ranges
int a = random.nextInt(65) + 1;
int b = random.nextInt(850) + 1;
int c = random.nextInt(82);
int d = random.nextInt(2036 - 1000) + 1000;
int e = random.nextInt(52) - 11;
// Print random numbers
System.out.println("Random integer in range 1 to 65: " + a);
System.out.println("Random integer in range 1 to 850: " + b);
System.out.println("Random integer in range 0 to 81: " + c);
System.out.println("Random integer in range 1000 to 2035: " + d);
System.out.println("Random integer in range -11 to 40: " + e);
}
}

Note that the nextInt(int bound) method generates a random number between 0 (inclusive) and the specified bound (exclusive), so appropriate adjustments are made to fit the given ranges.