几种js排序方法

sort

var quickSort = function(arr){
		if(arr.length <= 1){ return arr;}
		var pivotIndex = Math.floor(arr.length/2),
			pivot = arr.splice(pivotIndex, 1)[0],
			left = [],
			right = [];
		for(var i = 0,len = arr.length;i < len;i++){
			if(arr[i] < pivot){
				left.push(arr[i]);
			}else{
				right.push(arr[i]);
			}
		}

		return arguments.callee(left).concat([pivot],arguments.callee(right));
	};

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

var selectSort = function(arr){
		for(var i = 0,len = arr.length - 1;i < len;i++){
			var tempIndex = i;
			for(var j = i + 1;j < arr.length;j++){
				if(arr[tempIndex] < arr[j]){
					tempIndex = j;
				}
			}
			var tempData = arr[tempIndex];
			arr[tempIndex] = arr[i];
			arr[i] = tempData;
		}
		return arr;
	};