Run results for: Palindrome checker

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36

Browser: Chrome 52

Operating system: Mac OS X 10.11.6

Device Platform: Other

Date tested: 8 years ago

Test name	Executions per second
detects an empty string as a palindrome	2182746.0 Ops/sec
detects a single character as a palindrome	1858438.0 Ops/sec
detects palindromic word	890442.6 Ops/sec
detects non-palindromic word	1595143.0 Ops/sec
detects palindromic sentence with capitalisation	376856.7 Ops/sec
detects palindromic sentence	442971.0 Ops/sec
detects non-palindromic sentence	1133257.6 Ops/sec

Script Preparation code:

function checkPalindrome(input){
  return isPalindrome(input.replace(/ /g,'').toLowerCase());
}

function isPalindrome(input) {
  if (input.length <= 1) {
    return true;
  } else {
    return (input[0] === input[input.length-1]) &&
            isPalindrome(input.substring(1,input.length-1));
  }
}

Tests:

detects an empty string as a palindrome
checkPalindrome('');
detects a single character as a palindrome
checkPalindrome('a');
detects palindromic word
checkPalindrome('hannah');
detects non-palindromic word
checkPalindrome('spanner');
detects palindromic sentence with capitalisation
checkPalindrome('Mr owl ate my metal worm');
detects palindromic sentence
checkPalindrome('Never Odd Or Even');
detects non-palindromic sentence
checkPalindrome('Never Even Or Odd');

Run results for: Palindrome checker

detects an empty string as a palindrome

detects a single character as a palindrome

detects palindromic word

detects non-palindromic word

detects palindromic sentence with capitalisation

detects palindromic sentence

detects non-palindromic sentence