Cod sursa(job #2471444)

Utilizator SurduTonySurdu Tony SurduTony Data 10 octombrie 2019 21:42:46
Problema Sortare prin comparare Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.78 kb
#include <iostream>
#include <fstream>
using namespace std;

ifstream f("algsort.in");
ofstream g("algsort.out");
int n, v[500001];

int part(int l, int h)
{
    int i=l, j=h, pivot=v[l];

    while(i<j) {
        do {
            i++;
        }while(v[i]<=pivot);

        do {
            j--;
        }while(v[j]>pivot);

        if(i<j)
            swap(v[i], v[j]);
    }
    swap(v[l], v[j]);
    return j;
}

void QuickSort(int l, int h)
{
    int j;

    if(l<h) {
        j=part(l, h);
        QuickSort(l, j);
        QuickSort(j+1, h);
    }
}

int main()
{
    f >> n;

    for(int i=1; i<=n; i++)
        f >> v[i];

    v[++n] = INT_MAX;

    QuickSort(1, n);

    for(int i=1; i<=n-1; i++)
        g << v[i] << ' ';

    return 0;
}