What is indexOf method 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. This method can be overloaded by passing different parameters to it. String.IndexOf (char x)

What is index of in Java?

Java String indexOf. The java string indexOf() method returns index of given character value or substring. If it is not found, it returns -1. The index counter starts from zero. There are 4 types of indexOf method in java.

What does the indexOf() method return?

The indexOf() method returns the first index at which a given element can be found in the array, or -1 if it is not present. Note: For the String method, see String.prototype.indexOf().

What does index mean?

Kids Definition of index. (Entry 1 of 2) 1 : a list of names or topics (as in a book) given in alphabetical order and showing where each is to be found. 2 : pointer sense 1 the index on a scale. 3 : sign entry 1 sense 3, indication Prices are an index of business conditions.