OC-042.数组与字符串之间的转换

1.字符串转数组

 NSString *str = @"tom,jack,lucy";
        //1.通过字符串来分割原来的字符串来组成一个数组 component:组成 Separated:分开
        NSArray *array = [str componentsSeparatedByString:@","];
        NSLog(@"%@",array);

2.数组转字符串

 //2.把数组组装成字符串
        NSString *str2 = [array componentsJoinedByString:@"-"];
        NSLog(@"%@",str2);