function isSuperset(set, subset) {
for (let elem of subset) {
if (!set.has(elem)) {
return false
}
}
return true
}
function union(setA, setB) {
let _union = new Set(setA)
for (let elem of setB) {
_union.add(elem)
}
return _union
}
function intersection(setA, setB) {
let _intersection = new Set()
for (let elem of setB) {
if (setA.has(elem)) {
_intersection.add(elem)
}
}
return _intersection
}
function symmetricDifference(setA, setB) {
let _difference = new Set(setA)
for (let elem of setB) {
if (_difference.has(elem)) {
_difference.delete(elem)
} else {
_difference.add(elem)
}
}
return _difference
}
function difference(setA, setB) {
let _difference = new Set(setA)
for (let elem of setB) {
_difference.delete(elem)
}
return _difference
}
// Examples
const setA = new Set([1, 2, 3, 4])
const setB = new Set([2, 3])
const setC = new Set([3, 4, 5, 6])
isSuperset(setA, setB) // returns true
union(setA, setC) // returns Set {1, 2, 3, 4, 5, 6}
intersection(setA, setC) // returns Set {3, 4}
symmetricDifference(setA, setC) // returns Set {1, 2, 5, 6}
difference(setA, setC) // returns Set {1, 2}