// Filter unique array members
// importance: 5
// Let arr be an array.

// Create a function unique(arr) that should return an array with unique items of arr.

function unique(arr) {
  return Array.from(new Set(arr)).join(', ');
}

let values = ["Hare", "Krishna", "Hare", "Krishna",
  "Krishna", "Krishna", "Hare", "Hare", ":-O"
];

console.log( unique(values) ); // Hare, Krishna, :-O