Cod sursa(job #2410087)

Utilizator LucaSeriSeritan Luca LucaSeri Data 19 aprilie 2019 18:29:27
Problema Radix Sort Scor 70
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.32 kb
#include <bits/stdc++.h>
 
using namespace std;
 
int v[10000001];
int orderedArray[10000001];
int countingSort [1 << 16];
 
void sortBucket (int v[], int n, int bucketSize, int whichBucket) {
    int mask = ((1 << bucketSize) - 1);
    int constant = 1 << bucketSize;
    for (int i = 0; i < constant; ++i) {
        countingSort[i] = 0;
    }
 
    for (int i = 1; i <= n; ++i) {
        int currentPosition = (v[i] >> (whichBucket * bucketSize)) & mask;
        countingSort[currentPosition] += 1;
    }
 
    for (int i = 1; i < constant; ++i) {
        countingSort[i] += countingSort[i - 1];
    }
 
    for (int i = n; i >= 1; --i) {
        int currentPosition = (v[i] >> (whichBucket * bucketSize)) & mask;
        orderedArray[countingSort[currentPosition]] = v[i];
        countingSort[currentPosition] -= 1;
    }
 
    for (int i = 1; i <= n; ++i) {
        v[i] = orderedArray[i];
    }
}
 
int main() {
    ifstream fin ("radixsort.in");
    ofstream fout ("radixsort.out");
    int n, a, b, c;
    fin >> n >> a >> b >> c;
    v[1] = b;
    for (int i = 2; i <= n; ++i) {
        int newValue = static_cast<int>((1LL * a * v[i - 1] + b) % c);
        v[i] = newValue;
    }
 
    for (int i = 0; i < 2; ++i) {
        sortBucket(v, n, 16, i);
    }
 
    for (int i = 1; i <= n; i += 10) {
        fout << v[i] << ' ';
    }
    return 0;
}