Cod sursa(job #1615651)

Utilizator razvandRazvan Dumitru razvand Data 26 februarie 2016 18:57:08
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.18 kb
#include <math.h>
#include <algorithm>
#include <iostream>
#include <fstream>
using namespace std;

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

int getMax(int arr[], int n)
{
    int max = arr[0];
    for (int i = 1; i < n; i++)
        if (arr[i] > max)
            max = arr[i];
    return max;
}
/*
 * count sort of arr[]
 */
void countSort(int arr[], int n, int exp)
{
    int output[n];
    int i, count[10] = {0};
    for (i = 0; i < n; i++)
        count[(arr[i] / exp) % 10]++;
    for (i = 1; i < 10; i++)
        count[i] += count[i - 1];
    for (i = n - 1; i >= 0; i--)
    {
        output[count[(arr[i] / exp) % 10] - 1] = arr[i];
        count[(arr[i] / exp) % 10]--;
    }
    for (i = 0; i < n; i++)
        arr[i] = output[i];
}
/*
 * sorts arr[] of size n using Radix Sort
 */
void radixsort(int arr[], int n)
{
    int m = getMax(arr, n);
    for (int exp = 1; m / exp > 0; exp *= 10)
        countSort(arr, n, exp);
}

int main()
{
	int arrayNum[500003],t;
	in >> t;
	for(int y = 0; y<t; y++)
	{
		in>>arrayNum[y];
	}
	radixsort(arrayNum, t);
	for(int x = 0; x<t; x++)
	{
		out << arrayNum[x] << " ";
	}
	return 0;
}