Cod sursa(job #3285050)

Utilizator andrei65tAndrei Popescu-Ilioniu andrei65t Data 12 martie 2025 14:44:15
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.92 kb
#include <fstream>
using namespace std;
ifstream fin("algsort.in");
ofstream fout("algsort.out");
int n, v[500000];
int tmp[500000];
void mergesort(int v[], int st, int dr)
{
    if(st<dr)
    {
        int m=(st+dr)/2;
        mergesort(v,st,m);
        mergesort(v,m+1,dr);
        int i=st,j=m+1,k=0;
        while(i<=m&&j<=dr)
        {
            if(v[i]<v[j]){
                tmp[k]=v[i];
                i++;
            }else{
                tmp[k]=v[j];
                j++;
            }
            k++;
        }
        while(i<=m)
        {
            tmp[k]=v[i];
            k++;
            i++;
        }
        while(j<=dr){
            tmp[k]=v[j];
            k++;
            j++;
        }
        for(i=st,j=0;i<=dr;i++,j++)
			v[i]=tmp[j];
    }

}

int main()
{
    fin>>n;
    for (int i=0;i<n;i++)
        fin>>v[i];
    mergesort(v,0,n-1);
    for (int i=0;i<n;i++)
        fout<<v[i]<<" ";
    return 0;
}