Scala function: Check if a string is a palindrome
Write a Scala function to check if a given string is a palindrome.
Before you start!
To solve this problem, you should have a basic understanding of:
- What a palindrome is: A string that reads the same forward and backward.
- Scala string manipulation techniques.
- How to reverse a string in Scala.
- How to compare two strings for equality.
Try before looking at the solution!
Think about how you can check if a string is a palindrome:
- How can you reverse a string in Scala?
- Once reversed, how do you compare it with the original string?
- How would you handle case sensitivity or spaces in the string?
- Can you solve this problem using recursion or iteration instead of the built-in reverse method?
Sample Solution:
Scala Code:
object PalindromeChecker {
def isPalindrome(str: String): Boolean = {
val reversed = str.reverse
str == reversed
}
def main(args: Array[String]): Unit = {
val input1 = "madam"
val isPalindrome1 = isPalindrome(input1)
println(s"$input1 is a palindrome: $isPalindrome1")
val input2 = "scala"
val isPalindrome2 = isPalindrome(input2)
println(s"$input2 is a palindrome: $isPalindrome2")
}
}
Sample Output:
madam is a palindrome: true scala is a palindrome: false
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