CSC 243 Lab 9, Fall 2012

LEBANESE AMERICAN UNIVERSITY School of Arts and Sciences Department of Computer Science and Mathematics LAB 9 Dec 11,2012 Problem 1: Write a program where: a) The user input the length of an array N. Then create an array of size N. b) Fill the array with N integers that are the grades of a class of students. c) Calculate the average of the class using a method called average() d) Print all the values of the array, the maximum, the minimum, and the average Solution: http://www.javaproblems.com/2013/12/manipulating-array-in-java-for-beginners.html Problem 2: Write a program that reads 10 values of integers from the user store them in an array of integers. a. Then print the reverse of this array. Example: 1 6 3 4 2 9 8 10 5 7 Reverse: 7 5 10 8 9 2 4 3 6 1 b. The program writes the array in increasing order. (Using for loops). Increasing order: 1 2 3 4 5 6 7 8 9 10 Solution: http://www.javaproblems.com/2013/12/reversing-and-sorting-array-in-java.html Problem 3: This problem is divided into two parts. First, you should write a program that reads an integer N from the user and checks if the input is a prime number using a static method boolean isPrime(int N) that returns true if N is prime and false otherwise. Then, you should extend the program to determine all prime numbers between 2 and N and store them in an array. You can create an array of size N since the number of primes between 2 and N is bounded above by N. Finally, all found prime number should be displayed. Solution: http://www.javaproblems.com/2012/12/prime-numbers-arrays-with-java.html Good luck