Cod sursa(job #1378749)

Utilizator PTAdrian64Pop-Tifrea Adrian PTAdrian64 Data 6 martie 2015 14:02:44
Problema Radix Sort Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 1.19 kb
#include <cstdio>
#define nmax 10000010
#define get_byte(x) ((x>>(byte * 8))&0xff) ///0xff = 255
#include <cstring>

using namespace std;

int numbers[nmax];
int n,a,b,c;

void read();
void countersort(int[],int[],int);
void radixsort();
void print();

int main(){
    freopen("apm.in","r",stdin);
    freopen("apm.out","w",stdout);
    read();
    radixsort();
    print();
        return 0;
}
void read(){
    scanf("%d %d %d %d ",&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 countersort(int A[],int B[],int byte){
    int counter[1<<8];
    int index[1<<8];
    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<<8;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];
    for(int i = 0;i < sizeof(numbers[0]);i++){
        if(i%2)countersort(temp,numbers,i);
        else countersort(numbers,temp,i);
    }
}
void print(){
    for(int i = 0;i < n;i += 10)printf("%d ",numbers[i]);
    printf("\n");
}