Cod sursa(job #3001172)

Utilizator theo_scrie_codGhinea Theodor theo_scrie_cod Data 13 martie 2023 12:07:48
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.25 kb
#include <fstream>
using namespace std;
ifstream fin("algsort.in");
ofstream fout("algsort.out");


int shellSort(int arr[], int n)
{
    // Start with a big gap, then reduce the gap
    for (int gap = n/2; gap > 0; gap /= 2)
    {
        // Do a gapped insertion sort for this gap size.
        // The first gap elements a[0..gap-1] are already in gapped order
        // keep adding one more element until the entire array is
        // gap sorted 
        for (int i = gap; i < n; i += 1)
        {
            // add a[i] to the elements that have been gap sorted
            // save a[i] in temp and make a hole at position i
            int temp = arr[i];
  
            // shift earlier gap-sorted elements up until the correct 
            // location for a[i] is found
            int j;            
            for (j = i; j >= gap && arr[j - gap] > temp; j -= gap)
                arr[j] = arr[j - gap];
              
            //  put temp (the original a[i]) in its correct location
            arr[j] = temp;
        }
    }
    return 0;
}
int main()
{
    int v[500005],n;
    fin>>n;
    for(int i=0; i<n; i++)
        fin>>v[i];

    shellSort(v, n);
    for(int i=0; i<n; i++)
        fout<<v[i]<<" ";
    return 0;
}