Cod sursa(job #2610128)

Utilizator Vlad_AnicaAnica-Popa Vlad-Ioan Vlad_Anica Data 4 mai 2020 15:20:20
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.07 kb
#include <iostream>
#include <fstream>
#include <algorithm>
#include<cctype>
using namespace std;

ifstream fin ("algsort.in");
ofstream fout ("algsort.out");
int v[500000],a[500000];

int citire()
{
     char ch;
  int res = 0;
  while (!isdigit(ch = fin.get()));
  do {
    res = 10 * res + ch - '0';
  } while (isdigit(ch = fin.get()));

  return res;

  return res;
}
void mergesort( int st, int dr )
{
    if(st!=dr)
    {
        int mij=((st+dr)>>1);
        mergesort(st,mij);
        mergesort(mij+1,dr);
        int k,j,cpst=st;
        k=st;
        j=mij+1;
        while(k<=mij && j<=dr)
            if(v[k]<v[j])
                a[st++]=v[k++];
            else
                a[st++]=v[j++];
        while(k<=mij)
            a[st++]=v[k++];
        while(j<=dr)
            a[st++]=v[j++];
        for(j=cpst;j<=dr;j++)
            v[j]=a[j];
    }
}

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