What is LastIndexOf in C# with example?

LastIndexOf(String, Int32) Reports the zero-based index position of the last occurrence of a specified string within this instance. The search starts at a specified character position and proceeds backward toward the beginning of the string. LastIndexOf(Char, Int32)

How do I get LastIndexOf in C#?

C# String LastIndexOf() Method Example

1. using System;
2. public class StringExample.
3. {
4. public static void Main(string[] args)
5. {
6. string s1 = “Hello C#”;
7. int index = s1.LastIndexOf(‘l’);
8. Console.WriteLine(index);

Why do we use IndexOf in C#?

In C#, IndexOf() method is a string method. This method is used to find the zero based index of the first occurrence of a specified character or string within current instance of the string. The method returns -1 if the character or string is not found.

Is string a class in C sharp?

In C#, string is an object of System. String class that represent sequence of characters. We can perform many operations on strings such as concatenation, comparision, getting substring, search, trim, replacement etc.

What is the use of lastIndexOf in Java?

The lastIndexOf() method returns the position of the last occurrence of specified character(s) in a string. Tip: Use the indexOf method to return the position of the first occurrence of specified character(s) in a string.

How does lastIndexOf work in Java?

lastIndexOf(String str) : This method accepts a String as an argument, if the string argument occurs one or more times as a substring within this object, then it returns the index of the first character of the last such substring is returned. If it does not occur as a substring, -1 is returned.

What is OrdinalIgnoreCase in C#?

The StringComparer returned by the OrdinalIgnoreCase property treats the characters in the strings to compare as if they were converted to uppercase using the conventions of the invariant culture, and then performs a simple byte comparison that is independent of language.

Is indexOf case sensitive?

The indexOf() method returns the index number where the target string is first found or -1 if the target is not found. Like equals(), the indexOf() method is case-sensitive, so uppercase and lowercase chars are considered to be different.

What is string in C# with example?

In C#, a string is a sequence of characters. For example, “hello” is a string containing a sequence of characters ‘h’ , ‘e’ , ‘l’ , ‘l’ , and ‘o’ . We use the string keyword to create a string.

How do Substrings work in Java?

The substring(int beginIndex, int endIndex) method of the String class. It returns a new string that is a substring of this string. The substring begins at the specified beginIndex and extends to the character at index endIndex – 1. Thus the length of the substring is endIndex-beginIndex.

LastIndexOf () method returns -1 if the searched char/string (passed to this method) is not found in the invoked String object. Example of LastIndexOf (char) method In the upcoming example, we are going to search for the last index of a particular char value in the invoked String object by using the LastIndexOf () method.

Is the lastIndexOf method of string case-sensitive?

Note: The LastIndexOf (String, StringComparison) method performs a case-sensitive search, unless you pass a specific field of StringComparison with IgnoreCase specified in it . //C# Example of LastIndexOf (String, StringComparison) method of String. using System; class StringEx { public static void Main() { String str1= “Live and let live!”

How many different versions of lastIndexOf are there?

There are 9 versions (overloads) of LastIndexOf. Tip LastIndexOf internally searches the instance string from the final character backwards to the first character. Returns If the specified value parameter is located, its index is returned. Otherwise the special value -1 is returned.

What is string last index of index?

LastIndexOf (String, StringComparison) Reports the zero-based index of the last occurrence of a specified string within the current String object. A parameter specifies the type of search to use for the specified string.