Cod sursa(job #1401759)

Utilizator SerbanR98Serban Raicu SerbanR98 Data 26 martie 2015 09:28:07
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.65 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("algsort.in");
ofstream g("algsort.out");
int a[500001],b[500001],st,dr,n,i,j;

void inter(int st,int mij,int dr)
{
int i,j,k,t;
for(i=st;i<=dr;i++) b[i]=a[i];
i=st;j=mij+1;k=st-1;

while(i<=mij && j<=dr)
if(b[i]<b[j])
a[++k]=b[i++];
else a[++k]=b[j++];


for(t=i;t<=mij;t++) a[++k]=b[t];

for(t=j;t<=dr;t++) a[++k]=b[t];

}


void sort (int st,int dr)
{
int mij;
if(st!=dr)
{
mij=(st+dr)/2;
sort(st,mij);
sort(mij+1,dr);
inter(st,mij,dr);
}
}


int main()
{
f>>n;
for(i=1;i<=n;i++) f>>a[i];

sort(1,n);

for(i=1;i<=n;i++) g<<a[i]<<" ";


}