参考答案

参考回答：

冒泡排序：

function bubbleSort(data){
var temp=0;
for(var i=data.length;i>0;i--){
for(var j=0;j<i-1;j++){
if(data[j]>data[j+1])
{
temp=data[j];
data[j]=data[j+1];
data[j+1]=temp;
}
}
}
return data;
}

选择排序：

function selectionSort(data){
for(var i=0;i<data.length;i++){
var min=data[i];
var temp;
var index=1;
for(var j=i+1;j<data.length;j++){
if(data[j]<min)
{
temp=data[j];
data[j]=min;
min=temp;
}
}
temp=data[i];
data[i]=min;
data[index]=temp
}
}

插入排序：

function insertSort(data){
var len=data.length;
for(var i=0;i<len;i++){
var key=data[i];
var j=i-1;
while(j>=0&&data[j]>key){
data[j+1]=data[i];
j--;
}
data[j+1]=key;
}
return data;
}

希尔排序：

function shallSort(array) {
var increment = array.length;
var i

var temp; //暂存

do {

//设置增量

increment = Math.floor(increment / 3) + 1;
for (i = increment ; i < array.length; i++) {
if ( array[i] < array[i - increment]) {
temp = array[i];
for (var j = i - increment; j >= 0 && temp < array[j]; j -= increment) {
array[j + increment] = array[j];
}
array[j + increment] = temp;
}
}
}
while (increment > 1)
return array;
}

归并排序：

function mergeSort ( array ) {
var len = array.length;
if( len < 2 ){
return array;
}
var middle = Math.floor(len / 2),
left = array.slice(0, middle),
right = array.slice(middle);
return merge(mergeSort(left), mergeSort(right));
}
function merge(left, right)
{
var result = [];
while (left.length && right.length) {
if (left[0] <= right[0]) {
result.push(left.shift());
} else {
result.push(right.shift());
}
}
while (left.length)
result.push(left.shift());
while (right.length)
result.push(right.shift());
return result;
}

快速排序

function quickSort(arr){
if(arr.length==0)
return [];
var left=[];
var right=[];
var pivot=arr[0];
for(var i=0;i<arr.length;i++){
if(arr[i]<pivot){
left.push(arr[i]);
}
else{
right.push(arr[i]);
}
}
return quickSort(left).concat(pivot,quickSort(right));
}