How to find min value of an n digit number?

Question

I have been able to achieve what I am looking for but just want to know whether there is an inbuilt method to do so? I have a number say 2665. Now since this is a 4 digit, I need the minimum value of a 4 digit number which is 1000. Similarly if the number is 255, the answer would be 100. I tried this ``` int len = 2665.ToString().Length; string str = string.Empty; for (int index = 0; index < len; index++) { if (index == 0) str += "1"; else str += "0"; } ``` This gives correct result of `1000`. But is there an inbuilt function for this?

Accepted Answer

You can use `Pow` and power 10 to length of string. For 1 it will give 1 for 2 it will give 10 etc.

```
var str = Math.Pow(10, len - 1).ToString();
```

How to find min value of an n digit number?

Solution

Problem