- 核心算法：【只对英文字母数字有效】
NSString *str = @"hello,world";
NSMutableArray *array = [NSMutableArray array];
for (int i=0; i<str.length; i++) {
char charStr = [str characterAtIndex:i];
NSString *temStr = [NSString stringWithFormat:@"%c",charStr];
[array addObject:temStr];
}
NSArray *reverseArray = [[array reverseObjectEnumerator] allObjects];
NSString *reverseStr = [reverseArray componentsJoinedByString:@""];
NSLog(@"%@",reverseStr);
- 核心技术点
数组倒序输出
