Both blazar's and japhy's return true when passed 'fred', 'freda' which obviously isn't right.

When you add the code to detect that error, you get: 

                Rate   rg0now  ikegami Not_a_Number   blazar     japhy
+ BrowserUk
rg0now         412/s       --     -69%         -85%     -96%      -96%
+      -96%
ikegami       1311/s     218%       --         -54%     -86%      -88%
+      -89%
Not_a_Number  2842/s     589%     117%           --     -70%      -74%
+      -75%
blazar        9628/s    2236%     634%         239%       --      -13%
+      -17%
japhy        11086/s    2590%     745%         290%      15%        --
+       -4%
BrowserUk    11580/s    2709%     783%         307%      20%        4%
+        --

[download]
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
Lingua non convalesco, consenesco et abolesco. -- Rule 1 has a caveat! -- Who broke the cabal?
"Science is about questioning the status quo. Questioning authority".
The "good enough" maybe good enough for the now, and perfection maybe unobtainable, but that should not preclude us from striving for perfection, when time, circumstance or desire allow.

In reply to Re^3: Tell whether two strings differ at only one position by BrowserUk
in thread Tell whether two strings differ at only one position by rg0now

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.