Cod sursa(job #2606263)

Utilizator leeviiTempfli Levente2 leevii Data 27 aprilie 2020 13:31:48
Problema Radix Sort Scor 30
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.09 kb
#include <iostream>
#include <fstream>
#include <vector>
#include <cstring>

template<class T>
void radix_sort(std::vector<T> *v) {
    const unsigned char full_byte = 0xFF;

    const int max_byte_len = sizeof(T);

    auto *helper = new std::vector<T>(v->size());
    int counter[256];
    for (int i = 0; i < max_byte_len; i++) {
        memset(counter, 0, 256 * sizeof(int));
        for (int j = 0; j < v->size(); j++) {
            counter[(*v)[j] >> (i * 8) & full_byte]++;
        }
        for (int j = 1; j < 256; j++)
            counter[j] += counter[j - 1];
        for (int j = v->size() - 1; j >= 0; j--) {
            (*helper)[--counter[(*v)[j] >> (i * 8) & full_byte]] = (*v)[j];
        }
        std::swap(helper, v);
    }
    delete helper;
}


int main() {
    std::ifstream fin("radixsort.in");
    int n, a, b, c;
    fin >> n >> a >> b >> c;
    std::vector<int> v(n);
    v[0] = b % c;
    for (int i = 1; i < n; i++)
        v[i] = (a * v[i - 1] + b) % c;
    radix_sort(&v);

    std::ofstream fout("radixsort.out");

    for (int i = 0; i < n; i += 10)
        fout << v[i] << ' ';
}