Cod sursa(job #1182987)

Utilizator vladrochianVlad Rochian vladrochian Data 8 mai 2014 11:43:43
Problema Radix Sort Scor 30
Compilator cpp Status done
Runda Arhiva educationala Marime 0.75 kb
#include <fstream>
#include <cstring>
using namespace std;
int n,a,b,c,v[10000005],vaux[10000005];
ifstream fin("radixsort.in");
ofstream fout("radixsort.out");
int getbyte(int x,int bits)
{
	return (x>>bits)&255;
}
void radixsort(int *src,int *dest,int bits)
{
	int i,cnt[256],index[256];
	memset(cnt,0,sizeof cnt);
	for(i=0;i<n;++i)
		++cnt[getbyte(src[i],bits)];
	index[0]=0;
	for(i=1;i<256;++i)
		index[i]=index[i-1]+cnt[i-1];
	for(i=0;i<n;++i)
		dest[index[getbyte(src[i],bits)]++]=src[i];
}
int main()
{
	int i;
	fin>>n>>a>>b>>c;
	v[0]=b;
	for(i=1;i<n;++i)
		v[i]=(a*v[i-1]+b)%c;
	radixsort(v,vaux,0);
	radixsort(vaux,v,8);
	radixsort(v,vaux,16);
	radixsort(vaux,v,24);
	for(i=0;i<n;i+=10)
		fout<<v[i]<<" ";
	return 0;
}