objective c - Creating a Balancing Class to Balance Weights -


first of must admit assignment. not asking solve working hard solve , need algorithm.

i have array of weights assigned leftside , rightside of scale. need balance weights in right side , left side using weights in array.

i have following code not cover situations: 

-(bool) isbalanced {     _weights = [nsmutablearray arraywitharray:@[@3,@4,@2,@1,@5,@6,@4]];      self.leftside =  [[_weights objectatindex:arc4random() % 7] integervalue]; // random weight     self.rightside = [[_weights objectatindex:arc4random() % 7] integervalue]; // random weight      if(self.leftside == self.rightside) return yes; // balanced      if(self.leftside > self.rightside)     {         // add weights on right side         int difference = self.leftside - self.rightside;         int index = [_weights indexofobject:[nsnumber numberwithint:difference]];         self.rightside += [[_weights objectatindex:index] integervalue];          nslog(@"%d",index);     }     else     {         int difference = self.rightside - self.leftside;         int index = [_weights indexofobject:[nsnumber numberwithint:difference]];         self.leftside += [[_weights objectatindex:index] integervalue];         nslog(@"%d",index);     }      return self.leftside == self.rightside; }

update:

to simplify! have number 6 , need search inside array of ints if of numbers can added 6. example: 

1,2,3,5,4

in above array can take 1+2+3 makes 6. can take 4+2 6. question how find individual numbers can sum number 6.


Comments

Post a Comment

Popular posts from this blog

android - Get AccessToken using signpost OAuth without opening a browser (Two legged Oauth) -

i using signpost oauth access data magento server. have read various tutorials on same , reach point open browser user can enter credentials. however, per requirement have automate part. hence, user should not browser page. have set-up done on server side ( magento ), hit url , returned call page. same through program in android. i have tried below, consumer = new commonshttpoauthconsumer(key, secret); provider = new commonshttpoauthprovider(oauth_init_url,access_token_url, authorize_url); try { provider.retrieverequesttoken(consumer, oauth.out_of_band); log.d("tokens" , consumer.gettoken() + " -- " + consumer.gettokensecret()); } and request tokens. dont know how bypass next step. tried directly accessing accesstoken (stupid of me) provider.retrieveaccesstoken(consumer, "mycallback://callback"); no luck, ends in oauth.signpost.exception.oauthnotauthorizedexception: authorization failed (server replied 401). ...
Read more

org.mockito.exceptions.misusing.InvalidUseOfMatchersException: mockito -

getting error org.mockito.exceptions.misusing.invaliduseofmatchersexception: invalid use of argument matchers! 1 matchers expected, 2 recorded. exception may occur if matchers combined raw values: //incorrect: somemethod(anyobject(), "raw string"); when using matchers, arguments have provided matchers. example: //correct: somemethod(anyobject(), eq("string matcher")); at when( getprogramservice .callservice(any(getprogramtype.class))) .thenreturn(jaxbresponse); please explain error , possible resolution the code posted looks fine; don't see problem it. code before or above causing exception. key here: invalid use of argument matchers! 1 matchers expected, 2 recorded. any , used above, doesn't return "special kind of null" or "special kind of getprogramtype"; don't exist. instead, returns null , side effect puts matcher on stack. whe...
Read more

google shop client API returns 400 bad request error while adding an item -

i'm working on solution add items in google shopping market java application. following tutorial real mess because of missing classes of laste release, after setting 1.5-beta maven managed make base example typecheck correctly classes. still can make simple task of adding 1 item. instead of posting whole code i'm posting part creates product feed. private product createproduct(string id) { product product = new product(); product.title = "red wool sweater"; product.content = new content( "text", "comfortable , soft, sweater keep warm on " + "cold winter nights. red , blue stripes."); product.appcontrol = new appcontrol(); product.appcontrol.addrequireddestination("productads"); product.externalid = id; product.lang = "it"; product.country = "it"; product.condition = "nuovo"; product.price = new price("eu...
Read more