List arr1=[2,4,6,8,10,1,3];
List arr2=[2,4,6,8,10,12,14];
List newArr=[];
arr1.forEach((item){
if(!arr2.contains(item)){
newArr.add(item);
}
});
arr2.forEach((item){
if(!arr1.contains(item)){
newArr.add(item);
}
});
print('数组中不同的元素是:'+newArr.join(','));