用block變量來對字符數組對象進行排序
阿新 • • 發佈：2017-07-25
mil 升序 進行 mutable ted ear string sorted hit
<span style="font-size:18px;">降序排序</span>
<span style="font-size:18px;">NSMutableArray *arr = [NSMutableArray arrayWithObjects:@"abc",@"bcd",@"123",@"9987", nil];
NSComparisonResult (^block)(NSString *str1, NSString *str2) = ^(NSString *str1, NSString *str2){
return -[str1 compare:str2];
};
NSArray *arr1 =[arr sortedArrayUsingComparator:block];
NSLog(@"%@",arr1);
</span><span style="font-size:18px;">升序排序</span>
NSMutableArray *arr = [NSMutableArray arrayWithObjects:@"abc",@"bcd",@"123",@"9987", nil]; NSComparisonResult (^block)(NSString *str1, NSString *str2) = ^(NSString *str1, NSString *str2){ return [str1 compare:str2]; };
NSArray *arr1 =[arr sortedArrayUsingComparator:block];
NSLog(@"%@",arr1);
用block變量來對字符數組對象進行排序