[示例]NSEnumerator-使用枚举类型实现数组的逆序输出

代码：

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        NSMutableArray *array = [NSMutableArray arrayWithObjects:@"",@"",@"",nil];
        NSArray* reversedArray = [[array reverseObjectEnumerator] allObjects];
        for (id str in reversedArray) {
            NSLog(@"%@",str);
        }
    }
    return ;
}