Statement

Write a function that takes a string, s, as an input and determines whether or not it is a palindrome.

Note: A palindrome is a word, phrase, or sequence of characters that reads the same backward as forward.

Constraints:

  • 1≤1 \leq s.length ≤2×105\leq 2 \times 10^5
  • The string s will not contain any white space and will only consist of ASCII characters(digits and letters).

Examples

Understand the problem

Let’s take a moment to make sure you've correctly understood the problem. The quiz below helps you check if you're solving the correct problem:

Valid Palindrome

1

“abab” is a palindrome.

A)

True

B)

False

Question 1 of 40 attempted

Figure it out!

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Drag and drop the cards to rearrange them in the correct sequence.

Try it yourself

Implement your solution in the following coding playground. The supporting code template provided in two_pointers.js is meant to assist in developing your solution to the problem.

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JavaScript
usercode > main.js
function isPalindrome(s) {

    

    // Replace this placeholder return statement with your code

    return false;

}



export { isPalindrome };
Valid Palindrome