Cod sursa(job #542692)

Utilizator maritimCristian Lambru maritim Data 26 februarie 2011 19:58:59
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.85 kb
#include<stdio.h>
using namespace std;

long long A[500001];
long int n;

void citire(void)
{
	FILE *f = fopen("algsort.in","r");
	
	fscanf(f,"%d",&n);
	for(int i=1;i<=n;i++)
		fscanf(f,"%d ",&A[i]);
		
	fclose(f);
}

long int poz(int li,int ls)
{
	int i1 = 0;
	int j1 = -1;
	int c = A[li];
	int a = (int)(li+ls)/2;
	A[li] = A[a];
	A[a] = c;
	while(li<ls)
	{
		if(A[li]>=A[ls])
		{
			c = A[li];
			A[li] = A[ls];
			A[ls] = c;
			c = -i1;
			i1 = -j1;
			j1 = c;
		}
		li += i1;
		ls += j1;
	}
	return li;
}

void quick(int li,int ls)
{
	if(li<ls)
	{
	long int k = poz(li,ls);
	quick(li,k-1);
	quick(k+1,ls);
	}
}

void afisare(void)
{
	FILE *f = fopen("algsort.out","w");
	
	for(int i=1;i<=n;i++)
		fprintf(f,"%d ",A[i]);
	
	fclose(f);
}

int main()
{
	citire();
	quick(1,n);
	afisare();
	return 0;
}