摘要: NSString * str = @"abcdefg"; NSMutableString * string = [[NSMutableString alloc]initWithCapacity:str.length]; int j = (int)str.length; for (int i = j 阅读全文
posted @ 2017-07-17 15:28 tongyuling 阅读(1026) 评论(0) 推荐(0) 编辑