Difference between revisions of "StringReverse"

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m (more tweaks)
m (moved UStringRev to StringReverse: conformance to naming standards of user defined functions)
(No difference)

Revision as of 02:00, 29 May 2010

User-Defined Function: string uStringReverse( string vStrSrc );

Returns a string that is vStrSrc with the characters in reverse order

  • vStrSrc: source string to reverse

Code:

Smaller version

  • LSO: 169 bytes
  • MONO: 512 bytes

<lsl>string uStringReverse( string vStrSrc ){

   integer vIntCnt = llStringLength( vStrSrc );
   while (vIntCnt){
       vStrSrc += llGetSubString( vStrSrc, (vIntCnt = ~-vIntCnt), vIntCnt );
       vStrSrc = llDeleteSubString( vStrSrc, vIntCnt, vIntCnt );
   }
   return vStrSrc;

} /*//-- Anti-License Text --//*/ /*// Contributed Freely to the Public Domain without limitation. //*/ /*// 2009 (CC0) [ http://creativecommons.org/publicdomain/zero/1.0 ] //*/ /*// Void Singer [ https://wiki.secondlife.com/wiki/User:Void_Singer ] //*/ /*//-- --//*/</lsl>

Faster version

  • LSO: 184 bytes
  • MONO: 512 bytes

<lsl>string uStringReverse( string vStrSrc ){

   integer vIntCnt = llStringLength( vStrSrc );
   while (vIntCnt){
       vStrSrc += llGetSubString( vStrSrc, (vIntCnt = ~-vIntCnt), vIntCnt );
   }
   return llGetSubString( vStrSrc, llStringLength( vStrSrc ) >> 1, 0xFFFFFFFF );

} /*//-- Anti-License Text --//*/ /*// Contributed Freely to the Public Domain without limitation. //*/ /*// 2009 (CC0) [ http://creativecommons.org/publicdomain/zero/1.0 ] //*/ /*// Void Singer [ https://wiki.secondlife.com/wiki/User:Void_Singer ] //*/

/*//-- --//*/</lsl>

Caveats:

  • The "Faster" version doubles the string size internally, and is more likely to cause a stack/heap collision(script crash) with large strings and/or limited free memory