using System;

using System.Collections.Generic;

​

string [] mots = new []

{

   "bonjour", "coucou", "allo", "coucou", "yo", "bonjour", "coucou"

};

foreach(var (Mot, Nb) in CompterOccurrences(mots))

   Console.WriteLine($"Le mot {Mot} apparaît {Nb} fois");

​

static (string Nom, int Nb)[] CompterOccurrences(string [] mots)

{

   Dictionary<string, int> dictio = new ();

   foreach(string mot in mots)

      if(dictio.ContainsKey(mot))

         dictio[mot]++;

      else

         dictio.Add(mot, 1);

   (string, int) [] tab = new (string, int)[dictio.Count];

   int i = 0;

   foreach(var p in dictio)

      tab[i++] = (p.Key, p.Value);

   return tab;

}

​