Possible Duplicate:
Parse string to int array
I have string which comes from a numeric textbox like this: 2670053157. how should I split each character of string and insert them into List<int> elements?
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5 Answers
var list = numberString.Select(c => Int32.Parse(c.ToString())).ToList();
Or, if you'd rather add to an existing list:
list.AddRange(numberString.Select(c => Int32.Parse(c.ToString()));
Comments
var list = new List<int>();
list.AddRange(
from character in numericString
select int.Parse(character));
Comments
List<int> numericlist = "2670053157".Select(c => c - '0').ToList();
5 Comments
Silvermind
What did you do there?
c - '0'
Justin Niessner
@Silvermind - Chars are ints. Subracting '0' (48) from '2' (50) would result in 2.
Justin Niessner
The only reason I wouldn't suggest doing it this way is because it won't properly handle the case where there is a non-numeric character in the string.
Silvermind
@JustinNiessner Thanks, Learned some new logic today.
L.B
@JustinNiessner it would be good in cases where exception is not wanted (Int.Parse would throw exception and Int.TryParse does not suit well to linq)
If you're afraid of exceptions being thrown due to improper inputs, you could always go the safe route:
// string input = TextBox1.Text;
List<int> intList = new List<int>();
foreach (char c in input)
{
int i;
if (Int32.TryParse(c.ToString(), out i))
{
intList.Add(i);
}
}
Comments
Start out with a helper method:
public static IEnumerable<short> getDigits(long input)
{
while (input > 0)
{
yield return (short)(input % 10);
input /= 10;
}
}
Then if you want the values in a list, just call ToList:
List<short> list = getDigits(2670053157).ToList();
If you want the higher order bits first you'll need to Reverse the sequence:
List<short> list = getDigits(2670053157).Reverse().ToList();
