#1 Task

#1 Task

//JS

function preparePhrase(phrase) {
  return phrase.toLocaleLowerCase()
        .replace(/[^0-9а-яa-z]/gi, "");
}

function isPalendrome(phrase) {
    const preparedPhrase = preparePhrase(phrase);

    for (let i = 0, j = preparedPhrase.length - 1; i < j; i++, j--) {
         if (preparedPhrase[i] !== preparedPhrase[j])
           return false;
    }
    return true;
}

function isPalendromeLazy(phrase) {
    const preparedPhrase = preparePhrase(phrase);
    return preparedPhrase === preparedPhrase.split('').reverse().join('');
}