Cod sursa(job #1250073)

Utilizator fhandreiAndrei Hareza fhandrei Data 27 octombrie 2014 19:50:15
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.99 kb
// FMI - Grupa 135 - Semigrupa 2 - Hareza Andrei
// Include
#include <fstream>
#include <cstring>
using namespace std;

// Constante
const int sz = 500001;
const int base = 0x100;
const int byte = 0xFF;

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

int num;

int _values[sz], _tempValues[sz];
int *values=_values, *tempValues=_tempValues;
int counter[base];
int pos[base];

// Main
int main()
{
	in >> num;
	for(int i=1 ; i<=num ; ++i)
		in >> values[i];
	
	for(int power=0 ; power!=32 ; power+=8)
	{
		memset(counter, 0, sizeof(counter));
		for(int i=1 ; i<=num ; ++i)
			++counter[(values[i]>>power)&byte];
		
		pos[0] = 1;
		for(int i=1 ; i<base ; ++i)
			pos[i] = pos[i-1] + counter[i-1];
		
		for(int i=1 ; i<=num ; ++i)
			tempValues[pos[(values[i]>>power)&byte]++] = values[i];
		swap(values, tempValues);
	}
	
	for(int i=1 ; i<=num ; ++i)
		out << values[i] << ' ';
	
	out << '\n';
	
	in.close();
	out.close();
	return 0;
}