Cod sursa(job #2136248)

Utilizator inquisitorAnders inquisitor Data 19 februarie 2018 19:38:13
Problema Sortare prin comparare Scor 20
Compilator cpp Status done
Runda Arhiva educationala Marime 0.87 kb
#include <cstdio>
#include <queue>

int N, v[500000];

void RadixSort(int v[], int begin, int end)
{
    std :: queue<int> bucket[256];

    for(int j = 0; j != 4; ++j)
    {
        for(int i = begin; i != end; ++i)
        {
            bucket[v[i] >> (j << 3) & 255].push(v[i]);
        }

        for(int i = 0; i != 256; ++i)
        {
            int index = begin;

            while(!bucket[i].empty())
            {
                v[begin++] = bucket[i].front();

                bucket[i].pop();
            }
        }
    }
}

int main()
{
    freopen("algsort.in", "r", stdin);
    freopen("algsort.out", "w", stdout);

    scanf("%d", &N);

    for(int i = 0; i < N; ++i)
    {
        scanf("%d", &v[i]);
    }

    RadixSort(v, 0, N);

    for(int i = 0; i < N; ++i)
    {
        printf("%d ", v[i]);
    }

    return 0;
}