C# find index of first number in string

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WebOct 24, 2013 · Find index of first Char (Letter) in string. I have a mental block and can't seem to figure this out, sure its pretty easy 0_o. String can contain any number of … WebSep 30, 2024 · Return Value: If the element found then this method will return the first element that matches the conditions defined by the specified predicate otherwise it returns the default value for type T. Exception: This method will give ArgumentNullException if the match is null. Below programs illustrate the use of List.Find (Predicate) Method:

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

WebJan 3, 2024 · This makes it a good choice to find the index in arrays of primitive types (like string, number, or boolean). Array.prototype.findIndex() expects a callback as first parameter. Use this if you need the index in arrays with non-primitive types (e.g. objects) or your find condition is more complex than just a value. WebAttempts To Date. I have tried using the String.IndexOf, then a substring to contain the 'line', followed by a trim, although this seems extremely slow and will more than likely cause a lose of data.. I have also tried splitting the whole message into a char array (and going through to find the word "START", and then going through to get the 'numbers' after it), … can i ship beer from texas to colorado

c# - Finding first index of element that matches a condition using …

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 ... 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; can i ship beer ups

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C# Index of first occurrence in StringCollection - GeeksforGeeks

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 Webvar index = list.Select ( (value, index) => new { value, index = index + 1 }) .Where (pair => SomeCondition (pair.value)) .Select (pair => pair.index) .FirstOrDefault () - 1; That will … can i ship beer internationallyWebMar 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 five letter word with a m

"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. " - C# find index of first number in string

C# find index of first number in string

c# - Find index of first Char(Letter) in string - Stack Overflow

WebDec 10, 2009 · int ix = myString.IndexOfAny ('1', '2', '3', '4', '5', '6', '7', '8', '9', '0'); Share Improve this answer Follow answered Dec 10, 2009 at 8:23 David Hedlund 127k 31 201 221 2 This finds the index of the first digit. In addition to this you need to find the next non-digit, then do a substring. Three lines instead of one line of very simple regex. WebOct 24, 2013 · String can contain any number of digits, followed by a Letter (A-Z), followed by numbers again. How do I get the index of the Letter (S), so that I can substring so get everything following the Letter Ie: 5555S1 Should return S1 Cheers c# .net string Share Improve this question Follow edited Oct 24, 2013 at 22:46 asked Oct 24, 2013 at 3:57 …

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WebFindIndex (Int32, Predicate) Searches for an element that matches the conditions defined by the specified predicate, and returns the zero-based index of the first … Webint findFirstLetter (string str) { for (int ctr=0;ctr

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. 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. …

WebDec 4, 2024 · C String IndexOf( ) Method - The String.IndexOf() method in C# is used to find the zero-based index of the first occurrence of a specified Unicode character or string within this instance.SyntaxThe syntax is as follows −public int IndexOf (string val);Above, val is the string to find.ExampleLet us now see an example − Live WebMay 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.

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.

WebRemarks. The Predicate is a delegate to a method that returns true if the object passed to it matches the conditions defined in the delegate. The elements of the current List are individually passed to the Predicate delegate, moving forward in the List, starting with the first element and ending with the last element. can i ship beer uspsWeb@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. … can i ship black powder gunsWebApr 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 … five letter word with a n oWebJun 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) => … can i ship beer out of stateWebOct 15, 2013 · This gives you the first item for which IsKey is true (if there might be non you might want to use .FirstOrDefault () To get both the item and the index you can use KeyValuePair word = words.Select ( (item, index) => new KeyValuePair (item, index)).Where (item => item.Key.IsKey).First (); … five letter word with andyWebstring 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 five letter word with a n tWebThis 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 ... five letter word with a r e