Cod sursa(job #1164499)

Utilizator badea_adi1999Badea Adrian Catalin badea_adi1999 Data 2 aprilie 2014 09:20:48
Problema Sortare prin comparare Scor 40
Compilator cpp Status done
Runda Arhiva educationala Marime 0.64 kb
#include <cstdio>
#include <algorithm>
using namespace std;
FILE *f=fopen("algsort.in","r");
FILE *g=fopen("algsort.out","w");
int v[500001];



int divide(int p,int q)
{int st=p,dr=q,x=v[st];
while (st<dr) {while (st<dr&&v[dr]>=x) dr--;
               v[st]=v[dr];
               while (st<dr&&v[st]<=x) st++;
               v[dr]=v[st];
               }

v[st]=x;
return st;
}
void qs(int p,int q)
{int m=divide(p,q);
if (m-1>p) qs(p,m-1);
if (m+1<q) qs(m+1,q);


}

int main()
{int n,i,j;
fscanf(f,"%d",&n);
for (i=1;i<=n;i++) fscanf(f,"%d",&v[i]);
qs(1,n);
for (i=1;i<=n;i++) fprintf(g,"%d ",v[i]);
return 0;
}