Cod sursa(job #2275946)

Utilizator cezar.plescaCezar Plesca cezar.plesca Data 3 noiembrie 2018 19:53:12
Problema Radix Sort Scor 30
Compilator cpp-32 Status done
Runda Arhiva educationala Marime 1.24 kb
#include <algorithm>
#include <cstring>
#include <fstream>
 
using namespace std;
  
#define RADIX 0xF
#define RADIX_SIZE 4
#define TOTAL_BYTES sizeof(V[0])
 
int N;
int V[10000000];
 
#define get_byte(x) ((x>>(byte * 4)) & 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(V, temp, i);// sortez dupa byte-ul i
        else
            countsort(temp, V, i);
    }
}
 
ifstream fin("radixsort.in");
ofstream fout("radixsort.out");
 
int main(){	
	int a,b,c;
 
	fin>>N>>a>>b>>c;
 
	V[0]=b;
 
	for(int i=1;i<N;i++){
		V[i]=(1LL * a * V[i-1] % c + b) % c;
	}
 
	radixsort();
 
	for(int i=0;i<N;i+=10){
		 fout<<V[i]<<" ";
	}
 
	return 0;   
}