Cod sursa(job #1676466)

Utilizator deeagrtAndGrt deeagrt Data 5 aprilie 2016 22:20:39
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator java Status done
Runda Arhiva educationala Marime 0.7 kb

import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;

import java.util.Scanner;

public class Main {
public static void main(String[] args) throws IOException {
	Scanner a = new Scanner(new FileReader("lgput.in"));
	int nr = a.nextInt();
	int power = a.nextInt();
	int sol = new Main().pow(nr,power);
	PrintWriter o = new PrintWriter(new FileWriter("lgput.out"));
	o.println(sol);
	a.close();o.close();
}

 int pow(int nr, int power) {
	 if (power == 0)
		 return 1;
	 if (power == 1)
		 return nr;
	if (power%2 == 0){
		int x = pow(nr,power/2);
		return x*x;
	}
	else{
		int x = pow(nr,(power-1)/2);
		return nr*x*x;}
}
}