Cod sursa(job #2544264)

Utilizator divianegoescuDivia Negoescu divianegoescu Data 11 februarie 2020 21:21:06
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.76 kb
#include <fstream>
using namespace std;
ifstream fin("algsort.in");
ofstream fout("algsort.out");
int n,i,v[500002],w[500002];
void interclaseaza(int st,int mid,int dr){
    int i=st,j=mid+1,k=st-1;
    while(i<=mid && j<=dr){
        if(v[i]<=v[j])
            w[++k]=v[i++];
        else w[++k]=v[j++];
    }
    for(;i<=mid;i++)
        w[++k]=v[i];
    for(;j<=dr;j++)
        w[++k]=v[j];
    for(i=st;i<=dr;i++)
        v[i]=w[i];
}
void sorteaza(int st,int dr){
    if(st>=dr)return;
    int mid=(st+dr)/2;
    sorteaza(st,mid);
    sorteaza(mid+1,dr);
    interclaseaza(st,mid,dr);
}
int main(){
    fin>>n;
    for(i=1;i<=n;i++)
        fin>>v[i];
    sorteaza(1,n);
    for(i=1;i<=n;i++)
        fout<<v[i]<<" ";
    return 0;
}