java - Number list from a Map -


i have map simplifying in essense contains key values of data such as:

yahya, 4  john, 4 blake, 2 jill 2 janoe, 6 jilly 12 zapon, 5 zoe, 4 hamed, 1

i need order following output:

1. jilly, 12 pts 2. janoe, 6 pts 3. zapon, 5 pts 4. john, 4 pts 4. yahya, 4 pts 4. zoe, 4 pts 7. blake, 2 pts 7. jill, 2 pts 9. hamed, 1 pts

i have used comparator order map values according value:

public <k, v extends comparable<v>> map<k, v> sortbyvalues(final map<k, v> map) {     comparator<k> valuecomparator =  new comparator<k>() {         public int compare(k k1, k k2) {             int compare = map.get(k2).compareto(map.get(k1));             if (compare == 0) return 1;             else return compare;         }     };     map<k, v> sortedbyvalues = new treemap<k, v>(valuecomparator);     sortedbyvalues.putall(map);     return sortedbyvalues; }

and read : how element position java map, order hashmap alphabetically value , more not sure how put together.

i know can use key values:

for (map.entry<string, integer> entry : map.entryset()){     system.out.println(entry.getkey() + " ," + entry.getvalue() + " pts");  }

however 2 functionalities missing:

  1. sort alphabetically when keys same
  2. keep same numbering when value same , jump correct count afterwards.

tried this:

map<string, integer> map = sortbyvalues(grouplist);             int count = 1;             int counter = 1;             int previousscore = 0;              (map.entry<string, integer> entry : map.entryset()) {                 //counter = count;                 if (previousscore == entry.getvalue()) {                      system.out.println(counter - 1 + " " + entry.getkey() + "," + entry.getvalue() + " pts");                  } else {                      system.out.println(counter + " " + entry.getkey() + "," + entry.getvalue() + " pts");                     previousscore = entry.getvalue();                     count++;                 }                 counter++;              }

any thoughts appreciated , welcome. can suggest method achieve required result ?

  1. in valuecomparator replace if (compare == 0) return 1; if(compare == 0) return k1.compareto(k2).
  2. when generating "numbering" (you have not shown code it), keep 2 counts. increase 1 of them on every iteration, , assign other one, if current value different last one. use latter generate "numbering".

Comments

Post a Comment

Popular posts from this blog

get url and add instance to a model with prefilled foreign key :django admin -

Image
i have page in each contest shown in row. each row contains contest id , link other model names have foreign key contest. news model: class news(models.model): title = models.charfield(max_length=50, null=true) description = models.textfield() time = models.timefield( default= datetime.datetime.now().time()) contest = models.foreignkey(contest) i want use admin adding , changing these models. want when user clicks on 'news' has foreign key contest id=1, shows list of news value foreign key. use {% instance in instances %} <tr class="{% cycle 'row1' 'row2' %}"> <td>{{ instance.title }}</td> <td>{{ instance.starttime }}</td> <td>{{ instance.timespan }}</td> <td>{{ instance.date }}</td> <td><a href="/adm...
Read more

css - Make div keyboard-scrollable in jQuery Mobile? -

from can tell, although jquery-mobile-powered pages can contain divs overflow set scroll or auto, , these divs can scrolled one-screen bar or mouse wheel, cannot scrolled using arrow keys, page-up/page-down, or home/end. instead, official "page" div (with data-role="page") absorbs input. perhaps other divs can't acquire focus, i'm not sure. is there way around this? edit: jsfiddle of simple example: https://jsfiddle.net/qogz0shx/ <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script> <script src="https://ajax.googleapis.com/ajax/libs/jquerymobile/1.4.5/jquery.mobile.min.js"> </script> <link rel="stylesheet" href="https://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.css"/> <style> #outer { overflow:scroll; height: 50vh; width: 50vw; } #inner { height: 500vh; width: 500vw; } ...
Read more

ruby on rails - Seeing duplicate requests handled with Unicorn -

recently upgraded our ec2 instances c3.large in order boost more unicorn workers handle increased traffic our site. (6xworkers per machine - 2 ec2 instances). when did this, started seeing duplicate records being created! looks somehow, maybe 2 unicorn workers attempting process same request? in nginx logs see 1 [post] request particular rails controller - yet 2 records being created in database. i'm hitting kind of race condition issue - have no idea how debug this. doesn't happen time, when it's frustrating well. noticed 2 database records within 5 seconds of each other. (and yes disable button when user clicks submit button). unicorn 4.8.2 ruby 1.9.3 rails 3.2.14 any great! thanks! although may not fix problem, upgrade ruby 2.0.0. there blog mentioning idea upgrade ruby 2.0.0 if using unicorn. for example: https://www.digitalocean.com/community/articles/how-to-optimize-unicorn-workers-in-a-ruby-on-rails-app specifically: if using ruby 1.9, ...
Read more