Cod sursa(job #2272335)

Utilizator CristyXtremeSimion Cristian CristyXtreme Data 30 octombrie 2018 00:50:13
Problema Sortare prin comparare Scor 80
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.36 kb
#include <stdio.h>
#include <vector>

using namespace std;

void sortare_interclasare(vector <int> a, vector <int> b, vector <int> &v) {
    int i = 0, j = 0, n = v.size();
    v.clear();
    for (int k = 0; k < n; k++) {
        if (i == a.size()) {
            v.push_back(b[j]);
            j++;
            continue;
        }
        if (j == b.size()) {
            v.push_back(a[i]);
            i++;
            continue;
        }
        if (a[i] > b[j]) {
            v.push_back(b[j]);
            j++;
        }
        else {
            v.push_back(a[i]);
            i++;
        }
    }
}

void merge_sort(vector <int> &v) {
    if (v.size() > 1) {
        int mid =  v.size() / 2;
        vector <int> a, b;
        for (int i = 0; i < mid; i++)
            a.push_back(v[i]);
        for (int i = mid; i < v.size(); i++)
            b.push_back(v[i]);
        merge_sort(a);
        merge_sort(b);
        sortare_interclasare(a, b, v);
    }
}

int main()
{
    freopen("algsort.in", "r", stdin);
    freopen("algsort.out", "w", stdout);
    int n, numar;
    vector <int> numere;
    scanf("%i", &n);
    for (int i = 0; i < n; i++) {
        scanf("%i", &numar);
        numere.push_back(numar);
    }
    merge_sort(numere);
    for (int i = 0; i < n; i++)
        printf("%i ", numere[i]);
    return 0;
}