Cod sursa(job #1049311)

Utilizator andreeastanescuAndreea Stanescu andreeastanescu Data 7 decembrie 2013 10:22:11
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.82 kb
#include <fstream>
using namespace std;
ifstream fin("algsort.in");
ofstream fout ("algsort.out");

int v[500001],c[500001],n,x;

void inter(int a,int m,int b){
    int i=a,j=m+1,k=a-1;

    while (i<=m&&j<=b) {
        if (v[i]<v[j])
            c[++k]=v[i++];
        else
            c[++k]=v[j++];

    }
    for (;i<=m;i++)
        c[++k]=v[i];
    for (;j<=b;j++)
        c[++k]=v[j];

    for (i=a;i<=b;i++)
        v[i]=c[i];
}



void sorteaza (int a,int b) {
    if (a==b)
        return;
    else {
        int m=(a+b)/2;
        sorteaza(a,m);
        sorteaza (m+1,b);
        inter (a,m,b);

    }
}






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