比如有一个数组： NSArray *arr = @[@"1", @"2", @"3"]; 倒过来排序： arr = [[arr reverseObjectEnumerator] allObjects]; NSMutableArray *accountArr = [NSMutableArray arrayWithContentsOfFile:filePath]; self.accountArr = (NSMutableArray *)[[accountArr reverseObjectEnumerator] allObjects];
原文：https://www.cnblogs.com/Free-Thinker/p/11393514.html