function containsOnlyUniqueElement(arr: number[]) {
const size = arr.length;
let set = new Set();
for (let i = 0; i < size; i++) {
set.add(arr[i]);
}
if (set.size == size) {
return true;
}
else {
return false;
}
}
const arr = [1, 5, 7, 3, 9, 8, 0, 2];
if (containsOnlyUniqueElement(arr)) {
console.log("Yes");
}
else {
console.log("No");
}
/*
run:
"Yes"
*/