Cod sursa(job #649302)

Utilizator vlad.doruIon Vlad-Doru vlad.doru Data 15 decembrie 2011 18:39:32
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.62 kb
#include <fstream>
#include <vector>

using namespace std;


ifstream in("algsort.in");
ofstream out("algsort.out");

const int N=500001;

vector <int> buckets[16];

int v[N],n,maxim;

void RadixSort(){
	int i,j,k,place,aux;
	for(i=0;maxim;maxim>>=4,i+=4){
		for(j=1;j<=n;++j){
			place=((v[j]>>i)&15);
			buckets[place].push_back(v[j]);
		}
		aux=0;
		for(j=0;j<=15;++j){
			for(k=0;k<buckets[j].size();++k){
				v[++aux]=buckets[j][k];
			}
			buckets[j].clear();
		}
	}
}

int main(){
	int i;
	in>>n;
	for(i=1;i<=n;++i){
		in>>v[i];
		if(v[i]>maxim)
			maxim=v[i];
	}
	RadixSort();
	for(i=1;i<=n;i++){
		out<<v[i]<<" ";
	}
	return 0;
}