I have one string having numbers and alphabets want to split alphabets and digits in separate array using LINQ query in C# .my string is as
"abcd 00001 pqr 003 xyz abc 0009"
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3What would be the expected output? And why do you want to use LINQ when you don't have to?Mighty Badaboom– Mighty Badaboom2017-07-14 06:47:17 +00:00Commented Jul 14, 2017 at 6:47
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1do you want the digits in one array and the letters in a second array?Mong Zhu– Mong Zhu2017-07-14 06:48:17 +00:00Commented Jul 14, 2017 at 6:48
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I want string in separate array and digits in separate linkUma Dixit– Uma Dixit2017-07-14 06:49:22 +00:00Commented Jul 14, 2017 at 6:49
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1Have you tried anything yourself? Sounds like regularexpression would be nice here.Esko– Esko2017-07-14 06:49:37 +00:00Commented Jul 14, 2017 at 6:49
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1Why does it have to be LINQ? The Q stands for "Query Language", not manipulationMarco– Marco2017-07-14 06:49:54 +00:00Commented Jul 14, 2017 at 6:49
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3 Answers
you could transform the string to an char array and then use the Where clause to extract the necessary information:
string g = "abcd 00001 pqr 003 xyz abc 0009";
char[] numbers = g.ToCharArray().Where(x => char.IsNumber(x)).ToArray();
char[] letters = g.ToCharArray().Where(x=> char.IsLetter(x)).ToArray();
2 Comments
DeadlyEmbrace
Very elegant solution
Mong Zhu
@DeadlyEmbrace thank you, but it strongly depends on what op expects as result. It might be useless for him, if he needs the single elements still separated as in the original string like "abcd" and "pqr"
You can do it in this way:
string a ="abcd 00001 pqr 003 xyz abc 0009";
var digits = a.Split().Where(x=> {double number; return double.TryParse(x,out number);});
var letters = a.Split().Where(x=> {double number; return !double.TryParse(x,out number);});
foreach(var a1 in digits)
{
Console.WriteLine(a1);
}
foreach(var a1 in letters)
{
Console.WriteLine(a1);
}
The idea is to try to Parse the character and if it is parsed successful then it's a number.
1 Comment
Uma Dixit
Thank you guys I resolve my problem .
You can use GroupBy where the Key is a boolean that specifies if the entry is a number(Can be converted to a double) or text:
string input = "abcd 00001 pqr 003 xyz abc 0009";
double dummy;
var result = input.Split().GroupBy(i => double.TryParse(i, out dummy)).ToList();
var textArray = result.Where(i => !i.Key).SelectMany(i=> i).ToArray();
var numberArray = result.Where(i => i.Key).SelectMany(i => i.ToList()).ToArray();
