Is Palindrome? (v2)

Revision 2 of this benchmark created by Rhys Brett-Bowen on

Description

a silly test of palindrome testing techniques

Preparation HTML

<script>
function f1(str) {
   return str === str.split('').reverse().join('');
}

function f2(str) {
   for (var i=0; i<Math.floor(str.length / 2); i++) {
      if (str.charAt(i) !== str.charAt(str.length-i-1)) return false;
   }
   return true;
}

function f3(str) {
   return str.substring(0, Math.floor(str.length/2)) ==(str.substring(Math.ceil(str.length/2)).split('').reverse().join(''));
}


</script>

Setup

var str1 = "abcdefghijklmnopqrstuvwxyzzyxwvutsrqponmlkjihgfedcba";
    var str2 = "abcdefghijklmnopqrstuvwxyzyxwvutsrqponmlkjihgfedcba";
    var str3 = "abcdefghijklmnopqrstuvwxyzZyxwvutsrqponmlkjihgfedcba";

Test runner

Ready to run.

Testing in
TestOps/sec
native strip reverse
f1(str1) === true;
f1(str2) === true;
f1(str3) === false;
ready
for-loop character comparison
f2(str1) === true;
f2(str2) === true;
f2(str3) === false;
ready
reverse half
f3(str1) === true;
f3(str2) === true;
f3(str3) === false;
ready

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

  • Revision 1: published by Kyle Simpson on
  • Revision 2: published by Rhys Brett-Bowen on
  • Revision 3: published on
  • Revision 5: published by pixshatterer on
  • Revision 6: published on
  • Revision 7: published by KC on