Question

How to remove the last occurrence of a word from a string in C#

Answer 1

using System;

public class RemoveTheLastOccurrenceOfAWordFromAString_CSharp
{
	public static string removeLastOccurrenceOfAWordFromAString(string str, string word) {
		// Find the position of the last occurrence of word in str
		int pos = str.LastIndexOf(word, StringComparison.Ordinal);

		if (pos != -1) {
			str = str.Substring(0, pos) + str.Substring(pos + word.Length);
		}

		return str;
	}

	public static void Main(string[] args)
	{
		string str = "c# c python c# c++ java c# php rust";
		string word = "c#";

		str = removeLastOccurrenceOfAWordFromAString(str, word);

		Console.WriteLine(str);
	}
}


/*
run:

c# c python c# c++ java  php rust

*/

 

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Answer 2

using System;

public class RemoveTheLastOccurrenceOfAWordFromAString_CSharp
{
	public static string removeLastOccurrenceOfAWordFromAString(string str, string word) {
		// Find the position of the last occurrence of word in str
		int pos = str.LastIndexOf(word, StringComparison.Ordinal);

        if (pos == -1)
            return str;
 
        str = str.Remove(pos, word.Length);

		return str;
	}

	public static void Main(string[] args)
	{
		string str = "c# c python c# c++ java c# php rust";
		string word = "c#";

		str = removeLastOccurrenceOfAWordFromAString(str, word);

		Console.WriteLine(str);
	}
}


/*
run:

c# c python c# c++ java  php rust

*/

 

70+ SQL courses for beginners and professionals