Cod sursa(job #661876)

Utilizator alexzahazaharia alexandru alexzaha Data 15 ianuarie 2012 13:51:17
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.76 kb
#include <iostream>
#include <fstream>
#define max 500000
using namespace std;
int a[max];
void interclas(int i,int m,int j)
{int b[max];
int x=i;
int k=1;
int y=m+1;
while(x<=m && y<=j)
     if (a[x]<a[y])
           b[k++]=a[x++];
     else
           b[k++]=a[y++];
 
 while (x<=m)
        b[k++]=a[x++];
 while (y<=j)
        b[k++]=a[y++];
 
 int t=i;
 for (k=1;k<=(j-i)+1;k++)
        a[t++]=b[k];
}
 
void divimp(int i,int j)
{if (i<j)
    {int m=(i+j)/2;
     divimp(i,m);
     divimp(m+1,j);
     interclas(i,m,j);}
}
 
 
int main()
{
int i,n;
ifstream f("algsort.in");
ofstream g("algsort.out");
f>>n;
for(i=1;i<=n;i++)
f>>a[i];
divimp(1,n);
for(int i=1;i<=n;i++)
   g<<a[i]<<" ";
   f.close();
   g.close();
return 0;
}