Converting a String to Int[]
I have the code below, and I am having some weird behaviour when trying to convert a string to an int array. I know all values in the string are numbers and would just like to convert them into an int array so I can do some LUHN checking.
Some issues
The first digit in convert is 4
when I do:
char test = convert[i];
I get 52'4'
where 52 is the ASCII value for 4.
System.Convert.ToInt32(con
I get 52 where I am really looking for 4.
If I do:
Any ideas?
Some issues
The first digit in convert is 4
when I do:
char test = convert[i];
I get 52'4'
where 52 is the ASCII value for 4.
System.Convert.ToInt32(con
I get 52 where I am really looking for 4.
If I do:
Any ideas?
public static int[] ConvertString(string convert)
{
int[] digits = new int[convert.length];
for (int i = 0; i < convert.Length; i++)
{
digits[i] = System.Convert.ToInt32(convert[i]);
}
return digits;
}
seems like you want only 4 then you can use :
str.Remove(0, str.IndexOf("'')); // this would remove 52'
str.Substring(0, str.Length -1); // this would remove last '
now str would have 4 only.
hope it helps.
str.Remove(0, str.IndexOf("'')); // this would remove 52'
str.Substring(0, str.Length -1); // this would remove last '
now str would have 4 only.
hope it helps.
The best way is to use string.Split() method to separate elements, and a List to build the array dynamically:
public static int[] ConvertString(string convert)
{
string[] elems = convert.Split('\'');
List<int> list = new List<int>;
foreach (string s in elems)
{
if (s.Length > 0)
list.Add(Convert.ToInt32(s));
}
return list.ToArray();
}
I believe that this function will be better for you I have just made. This will only add digits to an int array and not fallover if your string to convert is l9ike 123456H
Andrew
Andrew
static int[] ConvertString(string convert)
{
List<int> intList = new List<int>();
foreach (char c in convert)
{
if (char.IsDigit(c))
intList.Add((Int32)Char.GetNumericValue(c));
}
return intList.ToArray();
}
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER
char x = 9; //Character '9' = ASCII 57
int b;
b = x - '0'; //That is '9' - '0' = 57 - 48 = 9
int b;
b = x - '0'; //That is '9' - '0' = 57 - 48 = 9
Bit of useless info but comparing both my function and that of evilrix , which both work I might point out, BUT
I am surprised to see that evilrix's function is on average 3.9 milliseconds faster than mine.
foreach loops just have performance hits everywhere lol
I am surprised to see that evilrix's function is on average 3.9 milliseconds faster than mine.
foreach loops just have performance hits everywhere lol
I suspect the difference is the overhead in calling Char.GetNumericValue and Char.IsDigit
true :-)
you need 4...you have got 52.
then you can find for ' and have 4.
you can you IndexOf method of string class, get this 4 in another string and can convert the new formed string to integer.