Cod sursa(job #2567703)
Utilizator | Data | 3 martie 2020 18:26:52 | |
---|---|---|---|
Problema | Sortare prin comparare | Scor | 40 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.54 kb |
#include <fstream>
using namespace std;
ifstream f("algsort.in");
ofstream g("algsort.out");
int a[500001];
int part(int st,int dr)
{
int i,j,p=a[dr];
j=st-1;
for(i=st;i<=dr;i++)
if(a[i]<=p)
swap(a[i],a[++j]);
return j;
}
void qs(int st,int dr)
{
int poz;
poz=part(st,dr);
if(poz-st>1) qs(st,poz-1);
if(dr-poz>1) qs(poz+1,dr);
}
int main()
{
int n;
f>>n;
for(int i=1;i<=n;i++)
f>>a[i];
qs(1,n);
for(int i=1;i<=n;i++)
g<<a[i]<<" ";
}