//像一个数组添加数组。

        copyArray = function(inSrcArray,inDestArray){

            var i;

            for(i=0;i<inSrcArray.length;i++){

                inDestArray.push(inSrcArray[i]);

            }

            return inDestArray;

        }

        var newArray =copyArray([1,5,5,11],[5,8]);

        console.log(newArray); //[5,8,1,5,5,11]

        //在一个数组中查找值。

        findArray = function (inArray,inValue) {

            var i;

            for(i=0;i<inArray.length;i++){

                if (inArray[i]==inValue){

                    return i;

                }

            }

            return -1;

        }

        var right = findArray([9,11,2,4],11);

        console.log(right);//

        //求数组内数字的平均值

        arrayAverage = function (inArray) {

            var accumulator=0;

            var i;

            for(i=0;i<inArray.length;i++){

                accumulator += inArray[i];

            }

            return accumulator/inArray.length;

        }

        var num = arrayAverage([7,9,66,1]);

        console.log(num);