Introduction

In this blog post, we will explore how to solve the LeetCode problem "2108" using AI. LeetCode is a popular platform for preparing for coding interviews, and with the help of AI tools like Chatmagic, we can generate solutions quickly and efficiently - helping you pass the interviews and get the job offer without having to study for months.

Problem Statement

Given an array of strings words, return the first palindromic string in the array. If there is no such string, return an empty string "". A string is palindromic if it reads the same forward and backward. Example 1: Input: words = ["abc","car","ada","racecar","cool"] Output: "ada" Explanation: The first string that is palindromic is "ada". Note that "racecar" is also palindromic, but it is not the first. Example 2: Input: words = ["notapalindrome","racecar"] Output: "racecar" Explanation: The first and only string that is palindromic is "racecar". Example 3: Input: words = ["def","ghi"] Output: "" Explanation: There are no palindromic strings, so the empty string is returned. Constraints: 1 <= words.length <= 100 1 <= words[i].length <= 100 words[i] consists only of lowercase English letters.

Explanation

• Iterate through the input array of strings.
  • For each string, check if it is a palindrome. If it is, return the string immediately.
  • If no palindrome is found after iterating through all strings, return an empty string.

• Runtime Complexity: O(n*m), where n is the number of strings and m is the maximum length of a string. Storage Complexity: O(1).

Code

    def firstPalindrome(words):
    """
    Finds the first palindromic string in an array of strings.

    Args:
        words: A list of strings.

    Returns:
        The first palindromic string in the array, or an empty string if none exists.
    """
    for word in words:
        if word == word[::-1]:
            return word
    return ""