✅349. 两个数组的交集 about like-algorithms HOT 2 OPEN

/**
 * @param {number[]} nums1
 * @param {number[]} nums2
 * @return {number[]}
 */
var intersection = function (nums1, nums2) {
    let result = new Set();
    let sort = new Set(nums2);
    for (num of nums1) {
        if (sort.has(num)) {
            result.add(num);
        }
    }
    return Array.from(result);
};

/**
 * @param {number[]} nums1
 * @param {number[]} nums2
 * @return {number[]}
 */
var intersection = function(nums1, nums2) {
	// 哈希表
	const ret = [];
	const set = new Set(nums1);
	for (let n of nums2) {
		if (set.has(n) && !ret.includes(n)) {
			ret.push(n);
		}
	}
	return ret;
};