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July 18, 2019 07:23
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| /*JavaScript Algorithms and Data Structures Projects: Palindrome Checker | |
| Return true if the given string is a palindrome. Otherwise, return false. | |
| A palindrome is a word or sentence that's spelled the same way both forward and backward, ignoring punctuation, case, and spacing. | |
| Note | |
| You'll need to remove all non-alphanumeric characters (punctuation, spaces and symbols) and turn everything into the same case (lower or upper case) in order to check for palindromes. | |
| We'll pass strings with varying formats, such as "racecar", "RaceCar", and "race CAR" among others. | |
| We'll also pass strings with special symbols, such as "2A3*3a2", "2A3 3a2", and "2_A3*3#A2". | |
| https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/javascript-algorithms-and-data-structures-projects/palindrome-checker*/ | |
| function palindrome(str) { | |
| //Remove all non-alphanumeric characters (punctuation, spaces and symbols) and turn to lowercase | |
| let strToCheck = str.toLowerCase().replace(/\s+|\W+|_+/g, ""); | |
| //reverse it | |
| let reversedStrToCheck = strToCheck.split("").reverse().join(""); | |
| //And check | |
| return (strToCheck === reversedStrToCheck ? true : false); | |
| } | |
| palindrome("A man, a plan, a canal. Panama"); | |
| /* | |
| palindrome("eye") should return a boolean. | |
| Passed | |
| palindrome("eye") should return true. | |
| Passed | |
| palindrome("_eye") should return true. | |
| Passed | |
| palindrome("race car") should return true. | |
| Passed | |
| palindrome("not a palindrome") should return false. | |
| Passed | |
| palindrome("A man, a plan, a canal. Panama") should return true. | |
| Passed | |
| palindrome("never odd or even") should return true. | |
| Passed | |
| palindrome("nope") should return false. | |
| Passed | |
| palindrome("almostomla") should return false. | |
| Passed | |
| palindrome("My age is 0, 0 si ega ym.") should return true. | |
| Passed | |
| palindrome("1 eye for of 1 eye.") should return false. | |
| Passed | |
| palindrome("0_0 (: /-\ :) 0-0") should return true. | |
| Passed | |
| palindrome("five|\_/|four") should return false. | |
| Passed | |
| */ |
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