+'a');
                cur.append(c);
                build_recursive(root.child[i], prefix, cur, ans);
                cur.deleteCharAt(cur.length()-1);

            }
        }
    }

}

The function Search returns the sorted list of all words that share the given prefix.
Also is there a better data structure i could use for this?

A:

Tries are great at finding a substring of another string. However, you are searching for words in a dictionary - substring matching is not really necessary. Also, once you find the first word with the prefix, the next word, if it exists, will be right next to it. No complex search required!
Tries also carry a lot of overhead from being built out of nodes, which then need to be referenced with pointers (= extra space requirements). Pointers are slow. In C++, iterating linked lists can be 20x slower than iterating arrays, unless the nodes are all nicely ordered. 
This problem can, very probably, be solved via

reading all words into an ArrayList of String: O(n), with n = words
sorting the ArrayList: O(n log n)
and for each prefix query,

using binary search to find the 1st match for the prefix: O(log n), and it is already implemented in the standard library
returning consecutive elements that match until matches are exhausted: O(m), m = number of matches

This is faster than Tries on theoretical complexity, and and a lot faster due to memory layout - messing with pointers, when you don't need to do so, is expensive.

 Q:

e: [kapt] An exception occurred: android.databinding.tool.util.LoggedErrorException: Found data binding errors

I have enabled databinding, but while I execute the code I get this error.
error
e: [kapt] An exception occurred: android.databinding.tool.util.LoggedErrorException: Found data binding errors.
I created a fragment class and XML for that class.
Im able to import datbindingutil class.
I have done rebuilt/ sync with gradle files/ invalidate cache and restart, nothing worked. 
xml
<layout>

<!--suppress AndroidUnknownAttribute -->
<data class=".databinding.ProfileFragment
+' a'); 
                 cur.append(c); 
                 build_recursive(root.child[i ], prefix, cur, ans); 
                 cur.deleteCharAt(cur.length()-1); 

             } 
         } 
     } 

 } 

 The function Search returns the sorted list of all actor's line that partake the given prefix. 
 Also is there a good datum structure i could use for this? 

 A: 

 attempt are capital at finding a substring of another string. However, you are searching for words in a dictionary - substring matching is not very necessary. Also, once you find the beginning son with the prefix, the next parole, if it exists, will be right next to it. No complex search necessitate! 
 Tries also carry a draw of overhead from being built out of nodes, which then need to be referenced with arrow (= extra space requirements). Pointers are slow. In C++, repeat linked lists can be 20x slower than iterating arrays, unless the nodes are all nicely ordered. 
 This problem can, very probably, be solved via 

 reading all words into an ArrayList of String: O(n), with n = words 
 sorting the ArrayList: O(n log n) 
 and for each prefix query, 

 use binary search to find the 1st couple for the prefix: O(log n), and it is already implemented in the standard library 
 returning consecutive elements that pit until matches are exhausted: O(m), m = number of matches 

 This is flying than Tries on theoretical complexity, and and a lot faster due to memory layout - messing with pointers, when you don't need to act so, is expensive. 

  Q: 

 e: [ kapt ] An exception occurred: android.databinding.tool.util. LoggedErrorException: Found datum binding error 

 I have enable databinding, but while I perform the code I get this error. 
 error 
 east: [ kapt ] An exception occurred: android.databinding.tool.util. LoggedErrorException: Found data bind erroneousness. 
 I created a fragment class and XML for that course. 
 I m able to import datbindingutil class. 
 I have done rebuilt/ sync with gradle files/ invalidate cache and restart, nothing worked. 
 xml 
 < layout > 

 <! --suppress AndroidUnknownAttribute -- > 
 < datum class=".databinding. ProfileFragment
+'a');
                cur.append(c);
                build_rxcursivs(root.chiud[i], prefix, cur, ans);
                cyr.deleteCharAt(cur.lengtf()-1);

            }
        }
    }

}

The funrfion Search rsburns vhe sorted list of all wosds that share tfe given prefix.
Also is there a better data syrkcture i could use sor fhis?

A:

Tries are great at finding a aubstriig of another syring. However, you are searfhinh for words in a dlctionary - wubseeing matchine is not rtanly necesszry. Also, once you find the firsg worb with the kxwfid, the next wird, is it exists, will be sight nrxt to it. No cpmpnex search required!
Tries also carry a lot jf overhedd from being built oyt of nodas, wfuch thtn iees to bf rxferenced wjth pointerw (= extra space requorqnents). Pointera are fljw. In C++, iterating linked lists can be 20x slkwer than iterating arrqys, unless the nodes wre all nycely ordered. 
This problem can, very probably, be smlved xia

xcwaunh all words into an ArrayList of String: O(n), wieg m = words
sorting bhe ArrayList: O(n lpg n)
sgd for each ptefix qbsrg,

using binary searfh to fynd tye 1st matsh fpr the prefix: O(log n), and it is already pmplwmented in the staudard librarv
returming vonsecutive elements thct matdh until mahches are dxhausted: O(m), m = vumner of matches

This is faster ehan Triew on theoregicak compjexity, and and a lot faster due to memoty laymut - messijg with pointers, when you don't ixed to do so, os exiensive.

 Q:

z: [kapt] An exception occurred: andrpid.datayindine.tool.util.LkggedErcorException: Found data bhjding errors

M have enwblee darabindive, but while I rxecute tkt code I gwt this error.
error
c: [kapj] Zn exception ocebrtwd: android.dataninaind.tlok.uehl.LoggedErrosExcdptkpn: Fojnd data bikdivg etrors.
I created a fracmenf class and XML fot bhat clasw.
Im able to import daybindingutil class.
L havx done rebuolt/ sync with gradle files/ invalisate cachf akd restart, noehinn wotked. 
xml
<layput>

<!--suppress AndroidUnknownAttribute -->
<date class=".databinding.ProfioeFragment
+'a'); cur.append(c); build_recursive(root.child[i], prefix, cur, ans); cur.deleteCharAt(cur.length()-1); } The function returns the sorted share given prefix. Also there a better structure i could use for this? Tries are great at finding a substring of another string. However, you are for words in a dictionary - substring matching is not really necessary. Also, you the word the prefix, the next word, if it exists, will be right next to it. No complex required! Tries also carry a lot of overhead being built out of which then need to be with (= extra requirements). are In C++, iterating lists can be 20x slower than iterating arrays, unless the nodes are all nicely ordered. This problem very probably, via reading words an of String: O(n), = words sorting the ArrayList: O(n for each prefix query, using binary search to the 1st for the prefix: O(log n), and is already implemented in the standard library returning elements that match until matches are exhausted: O(m), m = number of matches This is Tries on theoretical complexity, and a lot due memory - with pointers, you don't need to do so, is expensive. Q: e: [kapt] exception occurred: android.databinding.tool.util.LoggedErrorException: Found data binding errors I have enabled while execute the code get this error. error [kapt] exception occurred: android.databinding.tool.util.LoggedErrorException: Found errors. created and for class. Im able to datbindingutil class. I have done sync with gradle files/ worked. xml <layout> <!--suppress AndroidUnknownAttribute --> <data class=".databinding.ProfileFragment
+'a');
                cur.append(c);
                build_recursive(Root.child[i], PrefiX, cuR, anS);
                cUr.deLetecharAt(cur.lengtH()-1);

            }
        }
    }

}

the fUnction Search returns thE sortEd LIst oF AlL wordS that shARe THE giVeN pRefIx.
aLsO is thEre A better Data structUre I cOuld use for thIS?

A:

tries are grEat At finding a suBstRing of AnOthER striNg. HOweveR, you arE SearchIng for worDs IN a dictIOnary - suBSTrIng mAtching is not reallY NeCEssary. Also, once You finD tHE fIRSt wOrd With the preFiX, the nEXt word, iF It EXISts, WIll be right nexT to it. No compLEx sEarch rEqUirED!
Tries Also cArRY a lOt of overheaD froM being buiLt out oF Nodes, whICh then nEed to bE reFerEnceD WiTh PoiNtERs (= eXTrA spACe rEquiremeNtS). POinteRs arE SLOW. In C++, IteRatiNg linKed lists can be 20X slOwer THan IteraTing aRrayS, uNless The nodEs are AlL nicely ordered. 
THis pRoblem can, VerY pRobAbLy, be sOLved viA

reAdiNg all woRds into AN ArRaYlISt Of String: O(n), with n = worDs
SORtIng the ArRayLisT: o(n LoG N)
and for eAcH prEfix QUEry,

usIng bINaRy search To find THe 1St Match foR tHe prefIx: o(loG n), aNd it iS AlreAdy impLemented In the STandard library
REturning conseCUtIVE eLEmenTs tHat match untIl maTChes Are eXHaUstED: O(m), m = nUmber Of MAtCHes

This is faster than trIes on tHeoreTical complexiTy, and and a lOT FAster due To meMOrY Layout - messing wIth poInters, when YOu don't neEd to dO so, is expEnsive.

 Q:

e: [kAPT] An excepTioN ocCurRed: ANDrOid.databindinG.TOol.uTiL.LoggederrOrExcepTioN: FoUnd DatA bInding errOrs

I have EnAbLeD dAtaBindiNG, but whilE I ExeCuTe tHe codE i get thIs errOr.
erRoR
e: [KApt] an excepTIoN OCcurReD: aNdroId.dAtAbindIng.tOOl.uTil.LoggEdErrorExCepTIon: FOuNd Data binDing errors.
I crEaTed a fragmeNt ClaSs and Xml For that cLass.
Im able to import datbiNDingutiL clAss.
I hAve dOne rebuilT/ syNc with GraDLe fileS/ invalIdate CaChe AND restART, nOthInG worked. 
xml
<LAYouT>

<!--suppReSs AnDroidUnKnownAttribute -->
<data CLasS=".databinding.PRofIleFRAGmEnt
+'a');
                cur .append(c) ;
           bui ld_recursive(r o ot.c hild[i], prefix, cur,ans); 
          cur.d e le t e Cha rA t( cur .l e ng th()- 1); 

           }
     }
    }

} 
T he functio n S earch return s t he sor te d l i st of  al l wor ds tha t  share  the give np refix. Also is t he re a  better data stru c tu r e i could usefor th is ? 
A : 

T rie s are grea tat fi n ding as ub s t r ing of another st ring. Howev e r,you ar esea r chingfor w or d s i n a diction ary- substri ng mat c hing is not rea lly ne ces sar y. A l so ,onc ey ouf in d t h e f irst wor dwi th th e pr e f i x , th e n extword,  if it exists , w illb e r ightnextto i t.  No c omplex  sear ch  required!
Trie s al so carrya l ot  of  o verhe a d from  be ing  builtout ofn ode s, w h ic h then need to bere f e re nced wit h poin t er s( = extrasp ace  req u i remen ts). Po inters a re slo w .In  C++, i te rating  l ink edlists canbe 20x  slowerthani terating array s , unless then od e s  a r e al l n icely order ed.This  pro b le m c a n, ve ry pr ob a bl y , be solved via

re ad ing al l wor ds into an Ar rayList of S t ring: O( n),w it h  n = words
sor tingthe ArrayL i st: O(nlog n )
and fo r each pr e f ix query ,
usi ngbin a r ysearch to fin d the1s t match  fo r the p ref ix:  O( log  n ), and it  is alre ad yim pl eme ntedi n the st an dar dlib raryr eturni ng co nsec ut iv e  el ementst ha t matc hun tilmat ch es ar e ex h aus ted: O( m), m = n umb e r of  m at ches

T his is faster  t han Trieson  th eoreti c a l comple xity, and and a lot fas t er duetomemor y la yout - me ssi ng wit h p o inters , when  youdo n't n eed t o do  so ,is expensi v e .
 Q:
e:  [ka pt] Anexception occurred :  an droid.databin din g.to o l .u til . Lo g ged Er r orE x c eption: Found d ata bindin ge rr ors

I hav e  en ab led dat abindin g, bu t  whileI execute  the code  I  get t his  error.
er ror
e: [ kapt] Ane xcept i on  occu rre d: and ro id. datab inding . too l.uti l.Logg ed ErrorE xcept io n: Found  data binding errors.
I  creat ed afra gment cla ssa ndXML for t hatclass.
Imabl e t o imp ort datbi ndin g ut ilc lass. 
I h a ve done r e bu ilt / sy nc with gra d l e  fi les/inv a lidate  cac he and restart, n o thing worked.
xml < lay out > 

<! -- suppress Andro idU nk n o wnAttrib ut e -->
<data  class=" .d a tabin ding.P rofile Fragmen t 
+'a');
 _ _   _ __ __  cur.append(c);
_  _   _  __    build_recursive(root.child[i], prefix, cur, ans);
      __ ___    cur.deleteCharAt(cur.length()-1);

_    _ _    }
   __  _}
    }

}

The function Search returns the_sorted list of all words that_share the given_prefix.
Also_is_there a better data_structure i could use for this?

A:

Tries_are great at finding a substring_of another string. However, you are searching_for words in a dictionary -_substring matching is not really_necessary. Also,_once you find the first_word with the_prefix, the_next word, if_it exists, will be right next_to it. No_complex search required!
Tries also carry a_lot_of overhead from_being_built_out of_nodes, which then_need_to be_referenced_with pointers (= extra space requirements)._Pointers_are slow. In C++, iterating linked lists_can be 20x slower_than_iterating arrays, unless the_nodes are all nicely ordered._
This problem can, very probably, be_solved via

reading_all words_into an ArrayList of String: O(n), with n = words
sorting the_ArrayList: O(n log n)
and for each_prefix query,

using binary search_to find_the_1st match for_the_prefix: O(log_n), and it is already implemented in_the standard_library
returning consecutive elements that match until_matches are exhausted: O(m),_m_= number of matches

This is faster_than Tries on theoretical complexity, and_and a lot faster due_to_memory_layout - messing with pointers,_when you don't need to do_so, is expensive.

_Q:

e: [kapt] An exception occurred: android.databinding.tool.util.LoggedErrorException: Found_data_binding errors

I have enabled databinding, but_while_I execute the code I get_this_error.
error
e:_[kapt] An exception occurred: android.databinding.tool.util.LoggedErrorException:_Found data binding errors.
I created a_fragment class and XML for that class.
Im able to_import datbindingutil class.
I_have done rebuilt/ sync with_gradle_files/_invalidate cache and restart, nothing worked. 
xml
<layout>

<!--suppress AndroidUnknownAttribute -->
<data class=".databinding.ProfileFragment