Cod sursa(job #3031495)

Utilizator culiteramicacristiana culiteramica Data 19 martie 2023 23:56:23
Problema Sortare prin comparare Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.78 kb
#include <iostream>
#include <vector>
#include <ifstream>

using namespace std;

ifstream fin("algsort.in");
ofstream fout("algort.out");

int v[500000], tmp[500000];
void MergeSort(int v[], int st, int dr)
{
	if(st < dr)
	{
		int m = (st + dr) / 2;
		MergeSort(v, st , m);
		MergeSort(v, m + 1 , dr);
		int i = st, j = m + 1, k = 0;
		while( i <= m && j <= dr )
			if( v[i] < v[j])
				tmp[++k] = v[i++];
			else
				tmp[++k] = v[j++];
		while(i <= m)
			tmp[++k] = v[i++];
		while(j <= dr)
			tmp[++k] = v[j++];
		for(i = st , j = 1 ; i <= dr ; i ++ , j ++)
			v[i] = tmp[j];
	}
}

int main() {

    int n,i;
    fin>>n;

    for(i=0;i<n;i++)
        fin>>v[i];
    MergeSort(v,0,n-1);
    for(i=0;i<n;i++)
        fout<<v[i]<<" ";
    return 0;
}