Cod sursa(job #3326407)

Utilizator horatiu.avramAvram Popa Cristian Horatiu horatiu.avram Data 28 noiembrie 2025 18:45:51
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.89 kb
#include <fstream>

using namespace std;

const int MAXN=5e5;

ifstream fin("algsort.in");
ofstream fout("algsort.out");

int v[MAXN+1],b[MAXN+1];

void mergesort(int l,int r) {
    if(l<r) {
        int m=(l+r)/2;
        mergesort(l,m);
        mergesort(m+1,r);
        int i=l,j=m+1,k=0;
        while(i<=m&&j<=r) {
            if(v[i]<v[j]) {
                b[k++]=v[i++];
            } else {
                b[k++]=v[j++];
            }
        }
        while(i<=m) {
            b[k++]=v[i++];
        }
        while(j<=r) {
            b[k++]=v[j++];
        }
        j=0;
        for(i=l; i<=r; i++) {
            v[i]=b[j];
            j++;
        }
    }
}

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