Cod sursa(job #1529577)

Utilizator Mihai22eMihai Ionut Enache Mihai22e Data 21 noiembrie 2015 02:22:13
Problema Radix Sort Scor 30
Compilator cpp Status done
Runda Arhiva educationala Marime 1.01 kb
#include <fstream>
#include <vector>
using namespace std;

void sortStep(int a[], int n, int groupSize, int step) {
    int mask = (1 << groupSize) - 1;
    vector < int > buckets[mask + 1];

    for(int i = 0; i < n; ++i) {
        buckets[(a[i] >> step) & mask].push_back(a[i]);
    }
    int k = 0;
    for(int i = 0; i <= mask; ++i) {
        for(int j = 0; j < (int) buckets[i].size(); ++j) {
            a[k++] = buckets[i][j];
        }
    }
}

void radixSort(int v[], int n) {
     int groupSize = 8;

     for(int step = 0; step < 32; step += groupSize) {
        sortStep(v, n, groupSize, step);
     }
}

int main() {
    ifstream f("radixsort.in");
    ofstream g("radixsort.out");

    int n, a, b, c;
    f >> n >> a >> b >> c;

    int *v  = new int [n];
    v[0] = b;
    for(int i = 1; i < n; ++i) {
        v[i] = ((1LL * a * v[i - 1]) % c + b) % c;
    }

    radixSort(v, n);

    for(int i = 0; i < n; i += 10) {
        g << v[i] << " ";
    }
    g << "\n";

    f.close();
    g.close();

    return 0;
}