c# - 解决数学逻辑，将数字放在第一个和第二个数字的第三个数字中

Question

我有两个号码。

First Number is 2875 &
Second Number is 852145

现在我需要一个创建第三个数字的程序。

Third Number will be 2885725145

逻辑是

First digit of third number is first digit of first number.  
Second digit of third number is first digit of second number.  
Third digit of third number is second digit of first number.  
Fourth digit of third number is second digit of second number;

等等。

如果任何数字有剩余数字，则应在最后附加。

我不想将 int 转换为字符串。

int CreateThirdNumber(int firstNumber, int secondNumber)
{

}

那么有人可以建议我解决这个问题吗？

Answer 1

I do not want to convert int to string.

为什么？

不转换为字符串

Use Modulus and Division operator.

转换成字符串

Convert them to string. Use .Substring() to extract and append value in a string. Convert appended string to integer.