Cod sursa(job #3031505)

Utilizator culiteramicacristiana culiteramica Data 20 martie 2023 00:08:38
Problema Sortare prin comparare Scor 80
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.18 kb
#include <iostream>
#include <vector>
#include <fstream>

using namespace std;

ifstream fin("algsort.in");
ofstream fout("algsort.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];
	}
}

void QuickSort(int v[], int st, int dr)
{
	if(st < dr)
	{
		int m = (st + dr) / 2;
		int aux = v[st];
		v[st] = v[m];
		v[m] = aux;
		int i = st , j = dr, d = 0;
		while(i < j)
		{
			if(v[i] > v[j])
			{
				aux = v[i];
				v[i] = v[j];
				v[j] = aux;
				d = 1 - d;
			}
			i += d;
			j -= 1 - d;
		}
		QuickSort(v, st , i - 1);
		QuickSort(v, i + 1 , dr);
	}
}

int main() {

    int n,i;
    fin>>n;

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