求 70,89,78,90,96,79,88,100,56,95 总和，最大值，平均值

最大值

var sum=0		 var attr=[70,89,78,90,96,79,88,100,56,95]		 for(var i=0;i
     
      sum)			  {				  sum=attr[i]			  } 		 }		 		 alert(sum)
     

总和

var sum=0		 var attr=[70,89,78,90,96,79,88,100,56,95]		 for(var i=0;i

 平均值 sum/attr.length

最小值，sum=数组中任何一个数

var sum=70		 var attr=[70,89,78,90,96,79,88,100,56,95]		 for(var i=0;i

 

7，12,16,20,25

给数组插入值；这个值不能与数组的值一样

 冒泡排序：按照从小到大的顺序排列

9,8,7,6,5,4,3,2,1

var attr = [9,8,7,6,5,4,3,2,1];		var zj = 0;		for(var i=0;i
     
      attr[j+1])				{					zj = attr[j];					attr[j] = attr[j+1]					attr[j+1] = zj;				}				}			}		alert(attr);
     

 

查找某个值：1,4,5,3,2,7,6,9

var attr = [1,4,5,3,2,7,3,9];		var a =3;		var sy = -1;		for(var i=0;i

 

查找数组中某个数字出现的次数

求3,5,7在数组中出现的次数

1,4,3,5,9,9,3,2,4,6,2,1,3,5,7,9,0,5,3,5,2,1,5,6,7,8,2,4,6,8,0,5

var attr = [1,4,3,5,9,9,3,2,4,6,2,1,3,5,7,9,0,5,3,5,2,1,5,6,7,8,2,4,6,8,0,5,7,4,6,2,6,];		var c3 = 0;		var c5 = 0;		var c7 = 0;		for(var i=0;i