{ let list = new Set(); list.add(5); list.add(7); console.log('size', list, list.size); //{5, 7} 2 } { let arr = [1, 2, 3, 4, 5]; let list = new Set(arr); console.log('size', list.size); } { let list = new Set(); list.add(1); list.add(2); list.add(1)
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { , , , , , , }; // 定义不定长数组 //Length表示获取长度 ; i < numbe