iOS Object-C 将字符串转为数组

有字符串 sting=@“123456”,如何将其转为数组 [@“1”,@“2”,@“3”,@“4”,@“5”,@“6”];

如果用Swift语言,会很简单.直接强转就行,代码如下:

 let str : String = "123456"
 let array  = Array(str)
 print(array)

用Object-C,就相对麻烦一下,需要对字符串遍历,逐个取出,再添加进数组.代码如下:

    NSString * string = @"12345";
    
    NSMutableArray * array = [[NSMutableArray alloc]init];
    
    for (int i = 0; i < string.length; i ++)
    {
        unichar ch = [string characterAtIndex:i];
        NSString * charStr = [NSString stringWithFormat:@"%C",ch];
        //添加
        [array addObject:charStr];
    }
    
    NSLog(@"array===%@",array);