Cod sursa(job #1511095)

Utilizator aaa123aa aaa aaa123 Data 26 octombrie 2015 00:51:08
Problema Sortare prin comparare Scor 0
Compilator java Status done
Runda Arhiva educationala Marime 1.36 kb
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.util.*;


public class Main {
	
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		try {
			Scanner in = new Scanner(new FileReader("algsort.in"));
			int n = in.nextInt();
			int[] vector = new int[n];
			for(int i = 0; i < n; i++)
				vector[i] = in.nextInt();
			in.close();
			
			quick(vector, 0, n - 1);
			
			PrintWriter out = new PrintWriter("algsort.out", "UTF-8");
			for(int i = 0; i < n; i++)
				out.print(Integer.toString(vector[i]) + " ");
			out.close();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (UnsupportedEncodingException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	private static void quick(int[] vector, int s, int d) {
		if(s >= d)
			return;
		int mij = s + (d - s) / 2;
		int i = s;
		int pivot = vector[mij];
		int j = d;
		while(i < j){
			while(i < d && vector[i] < pivot)
					i += 1;
			while(j > s && vector[j] > pivot)
					j -= 1;
			if(i <= j){
				int aux = vector[j];
				vector[j] = vector[i];
				vector[i] = aux;
				i += 1;
				j -= 1;
			}
		}
		
		quick(vector, s, i - 1);
		
		quick(vector, i + 1, d);
	}

}