C# find index of first number in string

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Webvar index = list.Select ( (value, index) => new { value, index = index + 1 }) .Where (pair => SomeCondition (pair.value)) .Select (pair => pair.index) .FirstOrDefault () - 1; That will … WebApr 8, 2011 · The actual pattern is going to be [0-9]x [0-9] if you want only single numbers (89x72 will only match 9x7), or [0-9]+x [0-9]+ to match the longest consecutive string of numbers in both directions. Share Improve this answer Follow edited Jun 20, 2013 at 0:54 HamZa 14.5k 11 54 75 answered Apr 8, 2011 at 7:21 Tyler Menezes 623 1 4 17 Add a …

c# - Can i use regex to find the index of X? - Stack Overflow

WebJan 19, 2011 · This answer ist not complete (in C#). It is only getting the first number in the string. You have to itarate over the matches: resultString = string.Join(string.Empty, … Webstring s = "12345Alpha"; s = new string (s.TakeWhile (Char.IsDigit).ToArray ()); Or, more correctly, as Baldrick pointed out in his comment, find the first letter: s = new string (s.TakeWhile (c => !Char.IsLetter (c)).ToArray ()); Or, you can write a loop: int pos = 0; while (!Char.IsLetter (s [pos])) { ++pos; } s = s.Substring (0, pos); Share haba supply chain gmbh \\u0026 co. kg

c# - Find the first character in a string that is a letter - Stack Overflow

WebThis C# program illustrates the String.IndexOf (char x, int start1) method. It is apparent that we are looking for the 0 index, which corresponds to the letter “H.”. However, the line: int index2 = str.IndexOf (‘H’, 5); returns the index -1 because there is no H with a position higher than the first one. You can also find occurrences of ... WebJul 27, 2024 · A Computer Science portal for geeks. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. Webvar index = list.Select ( (value, index) => new { value, index = index + 1 }) .Where (pair => SomeCondition (pair.value)) .Select (pair => pair.index) .FirstOrDefault () - 1; That will return the index if it finds anything matching, or -1 otherwise. The +1 and -1 is to get the behaviour for the case where there are no matches. bradford products wilmington nc jobs

c# - Get index of nth occurrence of char in a string - Stack Overflow

c# - Find and extract a number from a string - Stack …

WebNov 19, 2008 · char? first = str.ToArray().Cast().Where( c => !list.Contains(c.Value)).FirstOrDefault(); Then first will be null if there are no matches. … WebFeb 1, 2024 · Syntax: public int IndexOf (string value); Here, value is the string to locate. The value can be null. Return Value: The method returns zero-based index of the first occurrence of value in the StringCollection, if found otherwise it returns -1. Note: This method performs a linear search. bradford products spaWebDec 12, 2024 · You would first need to know the index of the first digit and do a substring before using the accepted answer. string input = "abc123def456ghi"; string digits = null; if … bradford products north carolina

"WebJun 11, 2024 · Use the overload of Select which takes an index in the predicate, so you transform your list into an (index, value) pair: var pair = myList.Select ( (Value, Index) => … " - C# find index of first number in string

C# find index of first number in string

C# First occurrence in the List that matches the specified conditions ...

Web1. You could use a regular expression: Regex r = new Regex ("START\\s ( [\\d/]+)\\s+ ( [\\d:])", RegexOptions.IgnoreCase); Match m = r.Match (text); if (m.Success) { string … WebMay 14, 2013 · List index = new List (); for (int i = 0; i < txtLines.Count (); i++) { index.Add (i); } now you have a list of int contain index of all txtLines elements. you can call first element of List index by this code : index.First (); Share Follow edited Apr 14, 2024 at 15:05 The_Black_Smurf 5,148 14 53 75 answered May 14, 2013 at 5:29

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WebMar 23, 2013 · Here is an example console app: static void Main (string [] args) { String testing = "text that i am looking for"; Console.Write (testing.IndexOf ("looking") + Environment.NewLine); Console.WriteLine (testing.Substring (testing.IndexOf ("looking"))); Console.ReadKey (); } This will output: 15 looking for Share Improve this answer Follow WebThe IndexOf () method returns: index of the first occurrence of the specified character/string -1 if the specified character/string is not found Example 1: C# String IndexOf () using System; namespace CsharpString { class Test { public static void Main(string [] args) { string str = "Ice cream"; int result;

WebDec 9, 2014 · number = new String(input.ToCharArray().Where(c => Char.IsDigit(c)).ToArray()); //This gives me all the numbers in the string var index = input.IndexOfAny("0123456789".ToCharArray()); string substring = … Web@CodeGeek: Using IsDigit or IsNumber (there is a difference between those two--look it up) will give you the first non-digit. If the string contains spaces or special characters (i.e. …

WebMar 18, 2010 · public static int FindIndex(this IEnumerable items, Predicate predicate) { int index = 0; foreach (var item in items) { if (predicate(item)) break; index++; … WebAsking an anonymous downvoter for an explanation is futile. Two miniscule points: it should be "the index of the first non-numeric character"; and the Ruby convention is use snake-case, not camel-case, for the names of variables and methods ("some_string" rather than "someString"). You don't have to follow the convention, of course, but 99%+ of ...

WebDec 14, 2024 · A string is an object of type String whose value is text. Internally, the text is stored as a sequential read-only collection of Char objects. There's no null-terminating character at the end of a C# string; therefore a C# string can contain any number of embedded null characters ('\0'). The Length property of a string represents the number …

WebJun 26, 2011 · FindIndex (Predicate) Usage: list1.FindIndex (x => x==5); Example: // given list1 {3, 4, 6, 5, 7, 8} list1.FindIndex (x => x==5); // should return 3, as list1 [3] == 5; Share Improve this answer Follow answered Jun 26, 2011 at 2:46 abelenky 63.1k 22 109 158 1 There's no need to redefine equality via FindIndex predicate for primitive types. bradford products poolWebJul 19, 2024 · Is there a way to get the first and last item ("one", "four") in C# from the array, besides using array indexing (stringArray[0], stringArray[3]), something like stringArray.First and stringArray.Last ? ... Use indexing when you have the luxury of a string array with indexing available. First() and Last() have to loop over the array and are ... bradford products spWebMay 15, 2024 · 1. You could also simply do SelectedHexagonRegistry.Select (kvp => kvp.Value.SequenceNum).Max () to get the max value. But you are not actually searching for the maximum number, what you want is to sort the values ascending and find the first gap, as you've explained yourself. – Lou. haba supply chain gmbh \\u0026 co. kg bad rodachWebApr 21, 2012 · var firstCapitalIndex = objectsWithCharAndIndex.First (o => Char.IsUpper (o.Char)).Index; or return them all var allCapitalIndexes = objectsWithCharAndIndex.Where (o => Char.IsUpper (o.Char)).Select (o=>o.Index); of you could iterate through the objects if you need the char and the index together. haba teppich 140 x 140WebApr 21, 2012 · Select has a way to get the index aswell as the item you are enumerating. Eventhough it gives a slight extra overhead you could do this: var … bradford project searchWebApr 8, 2011 · Do you want the number, or the index of the number? You can get both of these, but you're probably going to want to take a look at … haba teeserviceWebJul 6, 2012 · Get index of nth occurrence of char in a string. I'm trying to make a function that returns the index of the Nth occurrence of a given char in a string. private int … haba teppich herzlich lila