Cod sursa(job #2829363)

Utilizator BeilandArnoldArnold Beiland BeilandArnold Data 8 ianuarie 2022 15:53:07
Problema Radix Sort Scor 70
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.87 kb
#define nume "radixsort"



#ifndef INFOARENA

#define fisier "../algorithm solutions/" nume

#define DBG

#else

#define fisier nume

#endif



#include <algorithm>

#include <cassert>

#include <cstring>

#include <fstream>

#include <iomanip>

#include <iostream>

#include <map>

#include <set>

#include <sstream>

#include <vector>

#ifdef INFOARENA

#include <tr1/unordered_set>

#include <tr1/unordered_map>

using namespace std::tr1;

#else

#include <unordered_set>

#include <unordered_map>

#endif



using namespace std;



ifstream fin(fisier".in");

ofstream fout(fisier".out");



#define MAX_N 10000000 + 1

#define RADIX 0xFF

#define RADIX_SIZE 8

#define TOTAL_BYTES sizeof(numbers[0])



int n;

int numbers[MAX_N];



#define get_byte(x) ((x>>(byte * 8))&RADIX)



void countsort(int A[], int B[], int byte) {

    int counter[1<<RADIX_SIZE];

    int index[1<<RADIX_SIZE];



    memset(counter, 0, sizeof(counter));



    for(int i = 0; i < n; i ++)

        ++counter[get_byte(A[i])];



    index[0] = 0;



    for(int i = 1; i < 1<<RADIX_SIZE; i ++)

        index[i] = index[i-1] + counter[i-1];



    for(int i = 0; i < n; i ++)

        B[index[get_byte(A[i])]++] = A[i];

}

void radixsort() {

    int *temp = new int[n]; // avem nevoie de un array ca spatiu temporar

    for (int i = 0; i < TOTAL_BYTES; i ++) {

        if(i % 2 == 0)

            countsort(numbers, temp, i);// sortez dupa byte-ul i

        else

            countsort(temp, numbers, i);

    }

}

void read()

{

    int a,b,c;

    fin>>n>>a>>b>>c;



    numbers[0] = b % c;

    for(int i = 1; i < n; i ++)

        numbers[i] = (1LL * a * numbers[i-1] % c + b) % c;

}

void write(ofstream& f)

{

    for(int i = 0; i < n; i +=10)

        f << numbers[i]<< ' ';

    f<<endl;

}



int main()

{

    read();



    radixsort();

//    sort(numbers, numbers + n);



    write(fout);



    return 0;

}