Cod sursa(job #3217776)

Utilizator chiarimitrebuiecontquestionmarkmiruna mihailescu chiarimitrebuiecontquestionmark Data 24 martie 2024 17:07:32
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.92 kb
#include <fstream>
using namespace std;
int h[500003];
void merge(int v1[], int v2[], int v3[], int n1, int n2){
  int i1=0, i2=0, poz=0;
  while(i1<n1&&i2<n2){
    if(v1[i1]<v2[i2])
      v3[poz++]=v1[i1++];
    else
      v3[poz++]=v2[i2++];
  }
  while(i1<n1)
    v3[poz++]=v1[i1++];

  while(i2<n2)
    v3[poz++]=v2[i2++];
}

void merge_sort(int v[], int n){
  if(n==1)
    return;
  int v3[n];
  if(n%2==1) {
    merge_sort (v,(n+1)/2);
    merge_sort (v+((n+1)/2),n/2);
    merge(v, v+(n+1)/2, v3, (n+1)/2, n/2);
  }
  else{
    merge_sort (v,n/2);
    merge_sort (v+(n/2),n/2);
    merge(v, v+(n/2), v3, n/2, n/2);
  }
  for(int i=0; i<n; i++)
    v[i]=v3[i];
}

int main(){
  ifstream fin("algsort.in");
  ofstream fout("algsort.out");
    int n;
    fin>>n;
    for(int i=0;i<n;i++)
      fin>>h[i];
    merge_sort(h,n);
    for(int i=0;i<n;i++)
      fout<<h[i]<<" ";
    return 0;
}