Problèmes de classe Template composée de fonctions statiques

#ifndef SORTCLASS_H
#define SORTCLASS_H

#include<iostream>

template<typename T>
class SortClass
{
public:
    SortClass(){};
    //Fonction pour afficher un tableau
    static void print(T *tab, int n)
    {
        std::cout << tab[0];
        for(int i(1); i< n; i++)
        {
            std::cout << ", " << tab[i];
        }
    }

    //Tri par PERMUTATION
    static void sortPermutation(T tab[], int n)
    {
        int compteur(0);
        for(int i(0); i<n; i++)
        {
            for(int j(i); j<n; j++)
            {
                compteur++;
                if(tab[i] < tab[j])
                    swap(tab[i], tab[j]);
            }
        }
    }    
};
#endif // SORTCLASS_H

#include <iostream>
#include <Windows.h>
#include <chrono>

#include "rndclass.h"
#include "sortclass.h"

int main()
{
    unsigned int temp = GetConsoleOutputCP();
    SetConsoleOutputCP(CP_UTF8);
    cout << "Hello World!" << endl;
    int n = 1000000;
    int *tab = new int[n];

string *tabLettres = new string[n];
    for(int i(0); i<n; i++)
    {
        tabLettres[i] = RndClass::rndString();
    }
    //print(tabLettres, n);
    cout << "***********************************************************************" << endl;
    auto start = std::chrono::system_clock::now();
    SortClass::sortPermutation(tabLettres, n);
    auto end = std::chrono::system_clock::now();
    auto elapsed = end - start;
    std::chrono::duration<double> diff = end - start;
    cout << "le temps est de : " << elapsed.count() << endl;
    cout << "le temps diff est de : " << diff.count() << endl;
SortClass::print(tabLettres, n);
    SetConsoleOutputCP(temp);
    return 0;
}

D:\Fichiers_applications\C++\Projets_QtCreator\Algorithmie\AlgoTri\AlgoTri\main.cpp:144: erreur : 'SortClass' is not a class, namespace, or enumeration

D:\Fichiers_applications\C++\Projets_QtCreator\Algorithmie\AlgoTri\AlgoTri\main.cpp:152: erreur : 'template<class T> class SortClass' used without template parameters
../AlgoTri/main.cpp:152:5: error: 'template<class T> class SortClass' used without template parameters
     SortClass::print(tabLettres, n);