var num = readline(); var arr = []; for(var i = 0; i < num; i++){ arr[i] = readline(); } var newArr = [...new Set(arr)]; newArr.sort(function(a,b){ return a-b; }); let len = newArr.length; for(var i = 0; i <len; i++){ print(newArr[i]); } 利用ES6新特性中的集合Se...