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Cod sursa(job #256956)
#include <stdio.h>
#define max 500001
#define IN "algsort.in"
#define OUT "algsort.out"
FILE *fin=fopen(IN,"r");
FILE *fout=fopen(OUT,"w");
long n;
unsigned long x[max];
void quick(long,long);
long poz(long,long);
int main()
{
int i;
fscanf(fin,"%d",&n);
for(i=1;i<=n;i++)
fscanf(fin,"%d",&x[i]);
fclose(fin);
quick(1,n);
for(i=1;i<=n;i++)
fprintf(fout,"%d ",x[i]);
fclose(fout);
return 0;
}
void quick(long st,long dr)
{
if(st<dr)
{
long k=poz(st,dr);
quick(st,k-1);
quick(k+1,dr);
}
}
long poz(long st,long dr)
{
long i=st;
long j=dr;
long ii=0;
long jj=-1;
long aux;
while(i<j)
{
if(x[i]>x[j])
{
aux=x[i];
x[i]=x[j];
x[j]=aux;
aux=ii;
ii=-jj;
jj=-aux;
}
i=i+ii;
j=j+jj;
}
return i;
}