Longest Palindromic Substring in Javascript

Welcome to the Longest Palindromic Substring in Javascript page! Here, you'll find the source code for this program as well as a description of how the program works.

Current Solution

const [, , input] = process.argv;

const getLongestPalindromic = (string) => {
  if (!string) return;

  let longestPal = '';

  for (let i = 1; i < string.length; i++) {
    for (let j = 0; j < string.length - i; j++) {
      let possiblePal = string.substring(j, j + i + 1).toLowerCase();

      if (
        possiblePal === [...possiblePal].reverse().join('') &&
        possiblePal.length > longestPal.length
      )
        longestPal = possiblePal;
    }
  }

  return longestPal;
};

console.log(
  getLongestPalindromic(input) ||
    'Usage: please provide a string that contains at least one palindrome'
);

Longest Palindromic Substring in Javascript was written by:

• izexi

If you see anything you'd like to change or update, please consider contributing.

How to Implement the Solution

No 'How to Implement the Solution' section available. Please consider contributing.

How to Run the Solution

No 'How to Run the Solution' section available. Please consider contributing.