Practice Exercise Reverse String Logic-Palindrome

The video tutorial explains how to reverse a string and check if it is a palindrome. It begins with an introduction to the concept of string reversal and palindromes, followed by a detailed step-by-step guide on reversing a string using loops. The tutorial also covers the use of character methods for string manipulation and demonstrates how to construct a reversed string. Finally, it concludes with tips for handling interview questions related to string reversal.

What is a palindrome?

• A string that reads the same backward as forward

• A string that contains only vowels

• A string that is longer than 10 characters

• A string that contains no spaces

Which method is used to access a character at a specific index in a string?

• getCharAt

• indexOf

• charAt

• substring

What is the initial value of the loop variable 'i' when reversing a string?

• Length of the string minus one

• 1

• Length of the string

• 0

How do you concatenate two strings in Java?

• Using the '+' operator

• Using the '-' operator

• Using the '*' operator

• Using the '/' operator

What is the purpose of creating a dummy string in the reversal process?

• To store the index of each character

• To store the original string

• To store the reversed string

• To store the length of the string

Why is understanding string reversal important in interviews?

• It is a common problem that tests basic programming skills

• It is rarely asked in interviews

• It is only useful for competitive programming

• It is used to test knowledge of advanced algorithms

What is the main challenge in checking if a string is a palindrome?

• Finding the length of the string

• Reversing the string and comparing it to the original

• Counting the number of vowels

• Removing all spaces from the string