Cod sursa(job #1837771)

Utilizator depevladVlad Dumitru-Popescu depevlad Data 30 decembrie 2016 14:14:57
Problema Sortare prin comparare Scor 80
Compilator cpp Status done
Runda Arhiva educationala Marime 0.94 kb
#include <bits/stdc++.h>

using namespace std;

ifstream f("algsort.in");
ofstream g("algsort.out");

const int NMAX = 500005;
const int SQRT = 1 << 16;

class List {
  public:
    int v;
    int nxt;
    List() {}
    List(int _v, int _nxt) {
        v = _v;
        nxt = _nxt;
    }
};

int n;
int c;
int fi[2 * SQRT + 1];
List l[2 * NMAX + 1];

inline void listPrepend(int i, int v) {
    c++;
    l[c] = List(v, fi[i]);
    fi[i] = c;
}

void bucketSort() {
    memset(fi, -1, sizeof fi);
    for (int i = 1, x; i <= n; i++) {
        f >> x;
        listPrepend(x % SQRT, x);
    }
    for (int i = SQRT - 1; i >= 0; i--) {
        for (int j = fi[i]; j != -1; j = l[j].nxt) {
            listPrepend(l[j].v / SQRT + SQRT, l[j].v);
        }
    }
    for (int i = SQRT; i <= 2 * SQRT; i++) {
        for (int j = fi[i]; j != -1; j = l[j].nxt) {
            g << l[j].v << " ";
        }
    }
}

int main() {
    f >> n;
    bucketSort();
    return 0;
}