Cod sursa(job #3253388)

Utilizator Laura721Laura Kudor Laura721 Data 2 noiembrie 2024 14:16:15
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.8 kb
#include <fstream>
using namespace std;
ifstream fin("algsort.in");
ofstream fout("algsort.out");
const int nmax=500000;
int aux[nmax+5];
int n,x[nmax+5];
void mergesort(int left, int right){
    if(left==right)
        return;
    int mid=(left+right)/2;
    mergesort(left,mid);
    mergesort(mid+1,right);
    int i=left,j=mid+1,k=left;
    while(i<=mid && j<=right){
        if(x[i]<x[j])
            aux[k++]=x[i++];
        else
            aux[k++]=x[j++];
    }
    while(i<=mid)
        aux[k++]=x[i++];
    while(j<=right)
        aux[k++]=x[j++];
    for(k=left;k<=right;k++)
        x[k]=aux[k];
}
int main()
{
    fin>>n;
    for(int i=1;i<=n;i++){
        fin>>x[i];
    }
    mergesort(1,n);
    for(int i=1;i<=n;i++){
        fout<<x[i]<<" ";
    }
    return 0;
}