摘要： 1 var arr = [1,2,3,4,5,6,1,2,3,11,1,2,3]; 2 3 var arr2 = neaten_arr(arr); 4 5 function neaten_arr(arr){ 6 var a = new Array(); 7 var b = new Array(); 8 9 for(i in arr){ 10 a[a... 阅读全文