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Test.java
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Test.java
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package self.math;
import java.math.*;
import java.text.*;
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
int base = input("Inserire intero per la base: ");
int power = input("Inserire intero per l'esponente: ");
System.out.println("Test iniziato!");
long start = System.nanoTime();
powerTest(base, power);
long end = System.nanoTime();
System.out.println("Durata test: " + convertTime(start, end) + "s");
}
private static void powerTest(int base, int power) {
BigInteger b1 = new BigInteger(Integer.toString(base));
BigInteger p1 = b1.pow(power);
BigInt b2 = new BigIntLL(base);
BigInt p2 = b2.pow(power);
StringBuilder sb = new StringBuilder();
String result = base + "^" + power + " = ";
String bigInteger = "BigInteger " + result + p1;
String bigInt = "BigInt " + result + p2;
if (!p1.toString().equals(p2.toString())) {
sb.append("Risultati diversi:\n");
sb.append(bigInteger);
sb.append("\n");
sb.append(bigInt);
} else {
sb.append("Test superato, risultato: ");
sb.append(result + p1);
}
System.out.println(sb.toString());
}
private static String convertTime(long start, long end) {
double time = (end - start) / Math.pow(10, 9);
DecimalFormat df = new DecimalFormat("#.###");
return df.format(time);
}
@SuppressWarnings("resource")
private static int input(String s) {
System.out.println(s);
Scanner sc = new Scanner(System.in);
return sc.nextInt();
}
}