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Cod sursa(job #280779)
#include<fstream.h>
ifstream fin("algsort.in");
ofstream fout("algsort.out");
long a[500],n,i,j;
long poz(long x,long y)
{long i,j,x2;
i=x; j=y; x2=a[x];
while (i<j)
{while (i<j&&a[j]>=x2) j--;
a[i]=a[j];
while (i<j&&a[i]<=x2) i++;
a[j]=a[i];}
a[i]=x2;
return i;}
void qsort(long x,long y)
{ long p=poz(x,y);
if (p-1>x) qsort(x,p-1);
if (p+1<y) qsort(p+1,y);}
int main()
{fin>>n;
for (i=0;i<n;i++)
fin>>a[i];
qsort(0,n-1);
for (i=0;i<n;i++)
fout<<a[i]<<' ';
fout.close();
return 0;}