Determine Number of Digits and Pad with 0 when required [C#]

[Shaitan00]

Given a string strTotal (all numerical values).

 

I need a mechanism to do the following.

1- Determine the number of digits in strTotal

2- If there are less then 2 (digits 0 to 9) then pad with a 0 to form 2-Digit Values like 00, 01, 02, 03,�, 08, 09.

Else leave as-is.

 

Any clues?

[Jaco]

Given a string strTotal (all numerical values).

 

I need a mechanism to do the following.

1- Determine the number of digits in strTotal

2- If there are less then 2 (digits 0 to 9) then pad with a 0 to form 2-Digit Values like 00, 01, 02, 03,�, 08, 09.

Else leave as-is.

 

Any clues?

 

Something like:

 

public string PaddedNumber(object oOriginal)

{

if (oOriginal.ToString().Length == 1)

{

return oOriginal.ToString().PadLeft(1, '0');

}

else

return oOriginal.ToString();

}

[Algorithm]

Originally Posted by Shaitan00

Given a string strTotal (all numerical values).

 

I need a mechanism to do the following.

1- Determine the number of digits in strTotal

2- If there are less then 2 (digits 0 to 9) then pad with a 0 to form 2-Digit Values like 00, 01, 02, 03,�, 08, 09.

Else leave as-is.

 

Any clues?

 

Try this:

 

for (int i = 0; i < strTotal.Length; i++)

{

if (i < 10)

{

Response.Write("0" + strTotal);

}

else

{

Response.Write(strTotal);

}

}

[snarfblam]

I personally would use PadLeft, like Jaco, but the first parameter should be a two (for a total minimum of two characters), not a one, and there is no need to check the length of the string. All of this is assuming that your string contains a single, properly formatted integer.

[MrPaul]

The algorithm that doesn't....

 

Algorithm's algorithm isn't just inferior, it is completely useless.

 

If strTotal is "1", we get:

01

 

If strTotal is "12", we get:

012012

 

 

If strTotal is "1234567890", we get:

0123456789001234567890012345678900123456789001234567890012345678900123456789001234567890012345678901234567890

 

:rolleyes:

[PlausiblyDamp]

could you not use .ToString("00") to return the number as a string? i.e. the following would product output like

00
01
02
...
08
09
10
11
12
13
...
98
99
100

 

for(int i=0;i <= 100;i++)
   Debug.WriteLine((i.ToString("00")));