Chapter 10: Problem 20

The ___ function searches for a string inside of another one.

Short Answer

Expert verified

Answer: The find() method returns -1 when the specified string is not found within another string.

Step by step solution

Understanding the concept

The ___ function is a method that searches for a specific string within another string. If the specified value is found, the function returns the position of the first character of the found substring. Otherwise, it returns -1.

Choose a programming language

Different programming languages have similar functions with slightly different names and syntax. For this example, let's choose Python and use the `find()` method. Note that similar functions/methods are available in other languages like JavaScript (`indexOf()`), Java (`indexOf()`), and C# (`IndexOf()`).

Declare a string and the search value

First, declare a string (the one to be searched) and the search value (the substring you're looking for). For example: ```python text = "Hello, world! Welcome to the universe!" search_value = "world" ```

Use the find() method

Now, use the `find()` method on the main string and pass the search value as its argument. The method will return the index position where the search value starts in the main string, or -1 if it's not found. For example: ```python position = text.find(search_value) print(position) # Output: 7 ```

Handle the result

Based on the result (index position or -1), you can handle the outcome. For example, you can print a message if the search value is found in the main string or a different message if it's not found: ```python if position != -1: print(f"'{search_value}' found at index {position}") else: print(f"'{search_value}' not found in the text") ``` By following these steps, you can search for a string inside another one using the `find()` method in Python or similar functions/methods in other programming languages.

Unlock Step-by-Step Solutions & Ace Your Exams!

Full Textbook Solutions
Get detailed explanations and key concepts
Unlimited Al creation
Al flashcards, explanations, exams and more...
Ads-free access
To over 500 millions flashcards
Money-back guarantee
We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

Recommended explanations on Computer Science Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

The ___ function searches for a string inside of another one.

Short Answer

Step by step solution

Understanding the concept

Choose a programming language

Declare a string and the search value

Use the find() method

Handle the result

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Computer Science Textbooks

Computer Systems

Computer Organisation and Architecture

Data Representation in Computer Science

Game Design in Computer Science

Algorithms in Computer Science

Theory of Computation

Study anywhere. Anytime. Across all devices.