Typescript中两个或多个数字数组的集合

const arr1: number[] = [1, 2, 3];
const arr2: number[] = [4, 5, 6];
const combinedArr: number[] = arr1.concat(arr2);
console.log(combinedArr); // 输出 [1, 2, 3, 4, 5, 6]

const arr1: number[] = [1, 2, 3];
const arr2: number[] = [2, 3, 4];
const intersection: number[] = arr1.filter(num => arr2.includes(num));
console.log(intersection); // 输出 [2, 3]

const arr1: number[] = [1, 2, 3];
const arr2: number[] = [2, 3, 4];
const union: number[] = Array.from(new Set([...arr1, ...arr2]));
console.log(union); // 输出 [1, 2, 3, 4]

const arr1: number[] = [1, 2, 3];
const arr2: number[] = [2, 3, 4];
const difference: number[] = arr1.filter(num => !arr2.includes(num));
console.log(difference); // 输出 [1]