Cod sursa(job #2596050)

Utilizator As932Stanciu Andreea As932 Data 9 aprilie 2020 10:13:29
Problema Radix Sort Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.86 kb
#include <iostream>
#include <fstream>
#include <cstring>
using namespace std;
ifstream fin("radixsort.in");
ofstream fout("radixsort.out");

const int nmax=10000005;

int n,a,b,c,v[nmax];
int out[256],cnt[256];

void read()
{
    fin>>n>>a>>b>>c;

    v[0]=b;
    for(int i=1;i<n;i++)
        v[i]=(a*v[i-1]+b)%c;
}

void radixsort()
{
    for(int bit=0;bit<=31;bit+=8)
    {
        for(int i=0;i<n;i++)
            cnt[(v[i]>>bit)&255]++;

        for(int i=1;i<256;i++)
            cnt[i]+=cnt[i-1];

        for(int i=n-1;i>=0;i--)
            out[--cnt[(v[i]>>bit)&255]]=v[i];

        for(int i=0;i<n;i++)
            v[i]=out[i];

        memset(cnt,0,sizeof cnt);
    }
}

void display()
{
    for(int i=0;i<n;i+=10)
        fout<<v[i]<<" ";
}

int main()
{
    read();
    radixsort();
    display();

    return 0;
}