Cod sursa(job #2451167)

Utilizator uvIanisUrsu Ianis Vlad uvIanis Data 25 august 2019 23:10:44
Problema Sortare prin comparare Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.98 kb
#include<fstream>
using namespace std;

size_t v[500001], output[500001], n;

size_t getMax()
{
    size_t mx = v[0];
    for (size_t i = 1; i < n; i++)
        if (v[i] > mx)
            mx = v[i];
    return mx;
}

void countSort(size_t exp)
{
    size_t i, count[10] = {0};


    for (i = 0; i < n; i++)
        count[ (v[i]/exp)%10 ]++;

    for (i = 1; i < 10; i++)
        count[i] += count[i - 1];

    for (i = n - 1; i >= 0; i--)
    {
        output[count[ (v[i]/exp)%10 ] - 1] = v[i];
        count[ (v[i]/exp)%10 ]--;
    }

    for (i = 0; i < n; i++)
        v[i] = output[i];
}


void radixsort()
{
    size_t m = getMax();

    for (size_t exp = 1; m/exp > 0; exp *= 10)
        countSort(exp);
}

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

    fin >> n;

    for(size_t i = 0; i < n; i++) fin >> v[i];

    radixsort();

    for(size_t i = 0; i < n; i++) fout << v[i] << " ";

    return 0;
}