shuffle2:function (arr) {
var arr1 =this.deepCopy(arr);
var len = arr1.length;
for(var i =0; i < len -1; i++){
var idx = Math.floor(Math.random() * (len - i));
var temp = arr1[idx];
arr1[idx] = arr1[len - i -1];
arr1[len - i -1] = temp;
}
var _num =0;
for(var i =0; i < len-1; i++){
if(arr1[i].flag == arr[i].flag){
_num ++
}
}
cc.log(arr)
cc.log(arr1)
if(_num >1){
return this.shuffle(arr);
}else{
return arr1;
}
},
