获取由 @" " 分隔的组件，并从结果中删除所有类似 @"" 的对象数组.

Get the components separated by @" " and remove all objects like @"" from the resultant array.

NSString* line = @"1 2     3";
NSMutableArray *array = (NSMutableArray *)[line componentsSeparatedByString:@" "];
[array removeObject:@""]; // This removes all objects like @""