public static void main(String[] argv) {
Primes primes = Primes.Instance;
int[] testInput = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20};
int[] testOutput = {-1, -1, 2, 3, 3, 5, 5, 7, 7, 7, 7, 11, 11, 13, 13, 13, 13, 17, 17, 19, 19};
int testIn, testOut, result, errors = 0;
for (int cc = 0, count = testInput.length; cc < count; cc++) {
testIn = testInput[cc];
testOut = testOutput[cc];
result = primes.floor(testIn);
if (result == testOut)
System.out.println(String.format("OK primes.floor(%d) => (prime %d)", testIn, result));
else {
errors += 1;
System.out.println(
String.format(
"ER primes.floor(%d) => (prime %d) != (expected %d)", testIn, result, testOut));
}
}
if (0 < errors) {
System.out.println(String.format("Error: count %d", errors));
System.exit(1);
} else {
System.out.println("OK Primes passed with no errors");
System.exit(0);
}
}
public void run() {
BigInteger start = Primes.random(numDigits);
for (int i = 0; i < numPrimes; i++) {
start = Primes.nextPrime(start);
synchronized (this) {
primesFound.add(start);
}
}
}
public static final int Floor(int num) {
return Instance.ceil(num);
}
public static final int Get(int idx) {
return Instance.get(idx);
}