Sphere Online Judge

SPOJ Problem Set (classical)

1163. Java vs C ++

Problem code: JAVAC

Apologists of Java and C++ can argue for hours proving each other that their programming language is the best one. Java people will tell that their programs are clearer and less prone to errors, while C++ people will laugh at their inability to instantiate an array of generics or tell them that their programs are slow and have long source code.

Another issue that Java and C++ people could never agree on is identifier naming. In Java a multiword identifier is constructed in the following manner: the first word is written starting from the small letter, and the following ones are written starting from the capital letter, no separators are used. All other letters are small. Examples of a Java identifier are javaIdentifier, longAndMnemonicIdentifier, name, nEERC.

Unlike them, C++ people use only small letters in their identifiers. To separate words they use underscore character ‘_’. Examples of C++ identifiers are c_identifier, long_and_mnemonic_identifier, name (you see that when there is just one word Java and C++ people agree), n_e_e_r_c.

You are writing a translator that is intended to translate C++ programs to Java and vice versa. Of course, identifiers in the translated program must be formatted due to its language rules — otherwise people will never like your translator.

The first thing you would like to write is an identifier translation routine. Given an identifier, it would detect whether it is Java identifier or C++ identifier and translate it to another dialect. If it is neither, then your routine should report an error. Translation must preserve the order of words and must only change the case of letters and/or add/remove underscores.


The input file consists of several lines that contains an identifier. It consists of letters of the English alphabet and underscores. Its length does not exceed 100.


If the input identifier is Java identifier, output its C++ version. If it is C++ identifier, output its Java version. If it is none, output 'Error!' instead.




Added by:Camilo Andrés Varela León
Time limit:1s
Source limit:50000B
Memory limit:256MB
Cluster: Pyramid (Intel Pentium III 733 MHz)
Languages:All except: ERL JS NODEJS PERL 6
Resource:Northeastern Europe 2006

hide comments
2014-09-18 16:40:28 mayank
@S and @sagar isn't nEErc a valid JAVA identifier ? Could you please explain how is it not, going by the given definition ?
2014-09-18 07:55:23 manoj kumar regar
Help !!!!!
Getting Wrong Answers(10 times)....
2014-09-17 13:57:13 Shaktiman
I did Best debugging ever in this program-- 200 test cases checking manually !!!
2014-09-07 19:48:56 chup0x
You can read until EOF in C++ using:
while(getline(cin, string))
2014-08-31 11:29:30 Gaurav Ahirwar
tle :/
2014-08-30 09:58:22 shallow
can someone pls check different cases on my code.I have checked all cases to the best of my knowledge nd still getting wrong answer.I may also be wrong in taking input.
here's the link http://ideone.com/SpBGzd
2014-08-30 06:31:21 sagar
@S for tht one i am getting correct output
it's error....anyway thanks.
now it's AC
i forgot see similar type of test case in c++ identifiers i.e bad__string it should return error
2014-08-29 18:24:55 S
@sagar what is the output for this one
neRRc is it n_e_r_r_c or error !
2014-08-29 17:30:13 sagar
someone give me test cases other than these


error for every test case given above
2014-08-26 12:49:19 Diksha Jaiswal
My 100th on spoj n AC in 1 go...feels gud :D
© Spoj.com. All Rights Reserved. Spoj uses Sphere Engine™ © by Sphere Research Labs.