This is Palindrome Checker algorithem that i can

this is my algorithm palindrome checker, if you have any algorithm that more than eficient. Please share to me.

function palindrome(str) {

  let revers = str.toLowerCase()

  let spl = revers.split("");

  let fil = spl.filter(e => e !== " " && e !== "." && e !== "," && e !== "_"&& e !== "-" && e !== "/" && e !== ")" && e !== "(");

  let asc = fil.join("");

  let dsc = fil.reverse().join("");

  return asc === dsc


console.log(palindrome("My age is 0, 0 si ega ym."));

// 1. string diconvert ke lowercase

// 2. string di split masing masing satu karakter

// 3. filter semua tanda baca yang ada

// 4. buat variable yang berisi hasil filter dan sufah dijoin menjadi string

// 5.buat variable dari hasil filter yang dibalik dengan memggunakan prototype array reverse() lalu di join

// 6. return dengan compare antara dua variable terakhir. jika sama hasilnya true jika berbeda hasilnya false

1 Like

I used a regex. so it reults in just three one line functions.
The bottom two lines are how I run the tests.
I’ve blurred it as the mods are asking us not to post solutions unless we blur them

let txtClean = str => str.replace(/(\W|_)/g, '').toLowerCase();

let txtRev = str => str.split('').reverse().join('');

let palindrome = str => txtClean(str) === txtRev(txtClean(str)) ? true: false;

const testArray = ["eye", "_eye", "race car", "not a palindrome", "A man, a plan, a canal. Panama", "never odd or even", "nope","almostomla","My age is 0, 0 si ega ym.", "1 eye for of 1 eye.","0_0 (: /-\ :) 0-0","five|\_/|four"]
testArray.forEach(test => console.log(palindrome(test)));

Hi @wildan !

Welcome to the forum!

I added spoiler tags around your code.

I’ve edited your post for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.

You can also use the “preformatted text” tool in the editor (</>) to add backticks around text.

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thanks for your correction to my post

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