Cod sursa(job #2451168)

Utilizator uvIanisUrsu Ianis Vlad uvIanis Data 25 august 2019 23:14:04
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.96 kb
#include<fstream>
using namespace std;

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

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

void cntSort(int exp)
{
    int i, cnt[10] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};


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

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

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

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


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

    for (int exp = 1; m/exp > 0; exp *= 10)
        cntSort(exp);
}

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

    fin >> n;

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

    radixsort();

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

    return 0;
}