return infinite loop python success -


i learning python online not understand last step should take.

here question

write function execute(prog) following. assume prog list of strings containing basic program, before. then, function should return either "success" or "infinite loop" depending on whether program terminates, or loops forever. important: should assume procedure findline(prog, target) defined in sub-task 2 defined, not need re-write it. hint

input example:(['5 goto 30', '10 goto 20', '20 goto 10', '30 goto 40', '40 end'])

my code still returns "infinite loop" when should return success cannot find last required step. ( include debugging checks here also)

def execute(prog):   location = 0        #print('prog = ', prog)   visited = [false] * len(prog)    while true:      in range (0,len(prog)):         visited[i] = true         #print('prog type=',type(prog))       # print(type(location))       #print('len of prog=', len(prog))       #for in range (0,len(prog)):        #  visited[i] = true         #   print('visited =', visited)        #  print('visited[i] =', visited[i])         # print('prog[i] =', prog[i])        findt = prog[location].split()       #print('findt = ',findt)   t = findt[-1]       #print('t=',t)   location = findline(prog, t)       #print('new location=', location)   if visited[location]:      return "infinite loop"   elif location==len(prog)-1:       return "success"          #print('t=',t)       #print('prog = ', prog)

hint: here getbasic() , findline() code wrote , works:

def getbasic():    mylist = []    while true:       line = str(input())       mylist.append(line)       if line.endswith("end"):         break    return mylist   def findline(prog, target):    in range(0, len(prog)):  #range doesn't include last element.      progx = prog[i].split()      if progx[0] == target:           return

this correct version of code :

def execute(prog):     location = 0     counter = 0     while true:         findt = prog[location].split()         t = findt[-1]         location = findline(prog , t)         counter += 1         if t == 'end':             return "success"         if counter > len(prog):             return "infinite loop"

in case use short way , easy way solution :)


-

Comments

Post a Comment

Popular posts from this blog

c# - Binding a comma separated list to a List<int> in asp.net web api -

the default binder in web api expecst http://url.com/webapi/report/?pageids=3243&pageids=2365 to bind public ihttpactionresult report(list<int> pageids){ // exciting webapi code} i wish bind http://url.com/webapi/report/?pageids=3243,2365 as running out of space in url get . i have created class public class commaseparatedmodelbinder : system.web.http.modelbinding.imodelbinder { public bool bindmodel(httpactioncontext actioncontext, modelbindingcontext bindingcontext) { //binding in here } } and registered in webapiconfig.cs var provider = new simplemodelbinderprovider( typeof(list<int>), new commaseparatedmodelbinder()); config.services.insert(typeof(modelbinderprovider), 0, provider); i have altered method signature use model binder so public ihttpactionresult report( [modelbinder] list<int> pageids){ // exciting webapi code} however break point in binder not being
Read more

Delphi 7 and decode UTF-8 base64 -

in delphi 7, have widestring encoded base64(that received web service widestring result) : pd94bwwgdmvyc2lvbj0ims4wij8+dqo8c3ryaw5nptiq2lpyqjwvc3ryaw5npg== when decoded it, result not utf-8: <?xml version="1.0"?> <string>طھط³طھ</string> but when decoded base64decode.org, result true : <?xml version="1.0"?> <string>تست</string> i have use encddecd unit decodestring function. the problem have using decodestring . function, in delphi 7, treats decoded binary data being ansi encoded. , problem text utf-8 encoded. to continue encddecd unit have couple of options. can switch decodestream . instance, code produce utf-8 encoded text file data: {$apptype console} uses classes, encddecd; const data = 'pd94bwwgdmvyc2lvbj0ims4wij8+dqo8c3ryaw5nptiq2lpyqjwvc3ryaw5npg=='; var input: tstringstream; output: tfilestream; begin input := tstringstream.create(data); try output := tfilestream.
Read more

html - Is there any way to exclude a single element from the style? (Bootstrap) -

so, have img logo, overlaid on div styled background-image: url("...") , , both elements inside 2 div classes .to-color , .to-overlay respectively, black transparent overlay. is there way exclude logo style given these 2 classes? here's jsfiddle example: link html , css example: - html - <div class="to-color"> <div class="to-overlay"> <div class="respo"> <div class="row"> <div class="col-xs-4 col-xs-offset-4 text-center"> <img src="http://ansonalex.com/wp-content/uploads/2011/06/google-logo-768x260.png" alt="..." class="img-responsive"> </div> </div> </div> </div> </div> - css - .to-color { background-color: #000; } .to-overlay { opacity : 0.5; } .respo { background-image: url("https://source.unsplash.com/category/objects/1600x900"); background-position: center center;
Read more