Is Palindrome? (v3)

Revision 3 of this benchmark created on

Description

a silly test of palindrome testing techniques

Preparation HTML

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

  function f2(str) {
    var i = str.length - 1;
    var k = 0;
    while (i > k) {
      if (str.charAt(k++) !== str.charAt(i--)) 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