It has grown in popularity like crazy, due to boosts in the fields of data sciences and artificial intelligence. Python has been the TIOBE index annual award winner for 3 times in the last 5 years. While(paragraph.Home » TIOBE Index TIOBE Index for June 2023 June Headline: Will Python remain number 1? Let’s look at an example of where we can find all occurrences of the letter ‘I’. If we want to start looking in the middle of the string, we need to pass a value to startIndex. By default, startIndex is 0, which is why indexOf starts at the beginning of the string. The indexOf method has an optional startIndex parameter that takes an int value. We can also use the ignoreCase optional argument when we do not care about case sensitivity.
Once again, this method returns -1 if the search string isn’t found. The substring “Green eggs and ham” is found at position 91. Println("Index of 'Green eggs and ham' => " + paragraph.indexOf("Green eggs and ham")) If we want to find where a certain substring begins, we use the indexOf(String) method. This method also has an optional argument that allows it to ignore case. Since computers count starting at 0, the result is 2. The letter ‘a’ is the 3rd character in the example string. Println("Index of letter a => " + paragraph.indexOf('a')) It will return the index where the character was first found or -1 if the string doesn’t contain such a character. The indexOf(Char) method is used to search for a single character within a string. Let’s go over the indexOf() method with a few examples. Such an operation is especially useful in situations where you may need to break a string into a substring or divide a string into different parts.
The Kotlin String class has an indexOf() method that allows developers to the position of a character or set of characters within a string.
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