倒序以及降序输出数组当中的成员信息

NSArray*arr6=@[@12,@9,@34,@56,@11];

NSLog(@"第二题没倒序之前输出——————————————————————————————————————————————————");

for (id str6 in arr6)

{

NSLog(@"%@",str6);

}

NSArray*newarr6=[NSArray arrayWithArray:arr6];

for (int i=0; i<arr6.count; i++) {

[arr6 ]

}

NSLog(@"倒序之后输出为_________________________________________________________");

NSComparator sort1=^(id obj1,id obj2){

NSComparisonResult result =[obj2 compare:obj1];

return result;

};

NSArray*sort2=[arr6 sortedArrayUsingComparator:sort1];

for (id str100 in sort2)

{

NSLog(@"%@",sort2);

}