Cod sursa(job #2618995)

Utilizator CoakazeRotaru Catalin Coakaze Data 26 mai 2020 17:56:35
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.88 kb
#include <iostream>
#include <fstream>
using namespace std;

void cnt(int v[], int n, int exp)
{
    int output[n];
    int i, numara[10] = {0};
    for (i=0; i<n; i++)
        numara[(v[i]/exp)%10]++;
    for (i=1; i<10; i++)
        numara[i] += numara[i-1];
    for (i=n-1; i>=0; i--)
    {
        output[numara[(v[i]/exp)%10]-1] = v[i];
        numara[(v[i]/exp)%10]--;
    }
    for (i=0; i<n; i++)
        v[i] = output[i];
}

void radixsort(int v[], int n)
{
    int maxim = v[0];
    for (int i=1; i<n; i++)
        if (v[i] > maxim)
            maxim = v[i];
    for (int k=1; maxim/k>0; k*=10)
        cnt(v, n, k);
}

int main()
{
    ifstream f("algsort.in");
    ofstream g("algsort.out");
    int n, i, v[500001];
    f>>n;
    for(i=0; i<n; i++)
        f>>v[i];
    radixsort(v, n);
    for(i=0; i<n; i++)
        g<<v[i]<<" ";
    return 0;
}