Cod sursa(job #2376917)

Utilizator mihaimusat.1998Musat Mihai-Robert mihaimusat.1998 Data 8 martie 2019 18:54:21
Problema Sortare prin comparare Scor 40
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.86 kb
#include <bits/stdc++.h>

using namespace std;

int partition(int v[], int left, int right) {
    int i = left;
    int j = right+1;

    int pivot = v[left];

    while(1) {
        do{
            i++;
        }while(v[i]<pivot);

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

        if(i>=j)
            break;
        swap(v[i], v[j]);
    }
    swap(v[left], v[j]);
    return j;
}

void quicksort(int v[], int left, int right) {
    if(left>=right) return;
    else {
        int p = partition(v, left, right);
        quicksort(v, left, p-1);
        quicksort(v, p+1, right);
    }
}

int main()
{
    ifstream fin("algsort.in");
    ofstream fout("algsort.out");

    int n, v[500001];

    fin>>n;

    for(int i=0; i<n; i++) {
        fin>>v[i];
    }

    quicksort(v, 0, n-1);

    for(int i=0; i<n; i++) {
        fout<<v[i]<<" ";
    }
    return 0;
}