correction exo DEDUPE #1
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c'était presque bon:
la copie du tableau dans une boucle for avec un index de trop créeait une valeur "undefined"
il suffit d'utiliser le spread operator pour copier un tableau.
Essaye de faire une seconde version en utilisant la fonction
includes()
plutôt quesort()
.Quand on corrigera on fera un test de performance avec tes versions et 2 autres versions supplémentaires.