/**
* Main method.
*
* @param args the command line arguments
*/
public static void main(String[] args) {
SimpleReader in = new SimpleReader1L();
SimpleWriter out = new SimpleWriter1L();
// Sanity check of randomNumber method -- just so everyone can see how
// it might be "tested"
final int testValue = 17;
final int testSamples = 100000;
NaturalNumber test = new NaturalNumber2(testValue);
int[] count = new int[testValue + 1];
for (int i = 0; i < count.length; i++) {
count[i] = 0;
}
for (int i = 0; i < testSamples; i++) {
NaturalNumber rn = randomNumber(test);
assert rn.compareTo(test) <= 0 : "Help!";
count[rn.toInt()]++;
}
for (int i = 0; i < count.length; i++) {
out.println("count[" + i + "] = " + count[i]);
}
out.println(" expected value = " + (double) testSamples / (double) (testValue + 1));
// Check user-supplied numbers for primality, and if a number is not
// prime, find the next likely prime after it
while (true) {
out.print("n = ");
NaturalNumber n = new NaturalNumber2(in.nextLine());
if (n.compareTo(new NaturalNumber2(2)) < 0) {
out.println("Bye!");
break;
} else {
if (isPrime1(n)) {
out.println(n + " is probably a prime number" + " according to isPrime1.");
} else {
out.println(n + " is a composite number" + " according to isPrime1.");
}
if (isPrime2(n)) {
out.println(n + " is probably a prime number" + " according to isPrime2.");
} else {
out.println(n + " is a composite number" + " according to isPrime2.");
generateNextLikelyPrime(n);
out.println(" next likely prime is " + n);
}
}
}
// Close input and output streams
in.close();
out.close();
}
/**
* Main method.
*
* @param args the command line arguments
*/
public static void main(String[] args) {
SimpleReader in = new SimpleReader1L();
SimpleWriter out = new SimpleWriter1L();
// Asks the user if they would like to find the square root of a number
out.println(
"Would you like to find the square root of a number? "
+ "(Enter 'y' for yes and anything else to terminate)");
String response = in.nextLine();
// Asks for number to find square root of. Will continue to ask user if
// they would like to find the square root after computation.
while (response.equals("y")) {
out.println("Enter number: ");
double x = in.nextDouble();
out.println("Enter error percentage margin: ");
double e = in.nextDouble();
double sqroot = sqrt(x, e);
out.println("Square Root estimate: " + sqroot);
// Asks the user if they would like to find the square root
out.println(
"Would you like to find the square root of a number? "
+ "(Enter 'y' for yes and anything else to terminate)");
response = in.nextLine();
}
if (response != "y") {
out.println("Terminating Program");
}
/*
* Close input and output streams
*/
in.close();
out.close();
}