const set = new Set(); set.add(1); set.delete(1); set.add(2); console.log(set.has(1), set.has(2)); // false true 교집합 const intersectSets = (setA, setB) => { const intersection = new Set(); for (const elem of setB) { if (setA.has(elem)) { intersection.add(elem); } } return intersection; }; console.log( intersectSets( new Set([1, 2, 3, 4]), new Set([2, 3]), ) ); // Set {2, 3} 합집합 const unionSets =..
