Cod sursa(job #1322227)

Utilizator GeorgianaMMirlogeanu Georgiana GeorgianaM Data 19 ianuarie 2015 21:20:58
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.75 kb
#include<iostream>
#include<fstream>

using namespace std;
ifstream f("algsort.in");
ofstream g("algsort.out");

int n,i,m;
long v[500005];

void counting_sort(int n,int p)
{
    int b[n];
    int a[10]={0};
    for(i=0;i<n;i++)
        a[(v[i]/p)%10]++;
    for(i=1;i<10;i++)
        a[i]+=a[i-1];
    for (i=n-1;i>=0;i--)
    {
        b[a[(v[i]/p)%10]-1]=v[i];
        a[(v[i]/p)%10]--;
    }
    for(i=0;i<n;i++)
        v[i]=b[i];
}

void radix_sort(int n)
{
    m=v[0];
    for(i=1;i<=n;i++)
        if(v[i]>m) m=v[i];
    for (int p=1;m/p>0;p*=10)
        counting_sort(n,p);
}

int main()
{   f>>n;
    for(i=0;i<n;i++)
    f>>v[i];
    radix_sort(n);
    for(i=0;i<n;i++)
        g<<v[i]<<" ";
    return 0;
}