Cod sursa(job #1214952)

Utilizator toncuvasileToncu Vasile toncuvasile Data 31 iulie 2014 19:13:18
Problema Sortare prin comparare Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.95 kb
#include <iostream>
#include <fstream>
using namespace std;

#define dim 500001
 
int A[dim], B[dim], n;
 
void Interchange(int st, int dr, int mid)
{
    int i=st, j=mid+1, k=st;
    while( (i<=mid) && (j<=dr) ){
        if(A[i]<=A[j]){
            B[k++]=A[i++];
        }else{
            B[k++]=A[j++];
        }
    }
 
    while( i<=mid ){
        B[k++]=A[i++];
    }
    while( j<=dr ){
        B[k++]=A[j++];
    }
 
    int t;
    for(t=st; t<=dr; t++){
      A[t]=B[t];
    }
 
 
}
 
void MergeSort(int st, int dr)
{
    if( st<dr ){
        int mid=(st+dr)/2;
        MergeSort(st,mid);
        MergeSort(mid+1,dr);
        Interchange(st,dr,mid);
    }
}
 
int main()
{
    ifstream fin("algosort.in");
	ofstream fout("algosort.out");
 
    fin >> n;
    int i;
    for(i=0; i<n; i++ ){
      fin >> A[i];
    }
 
    MergeSort(0,n-1);
 
    for(i=0; i<n; i++){
        fout << A[i] << " ";
    }
 
}