Duplicate code

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Duplicate code

Quality:

Duplicate code - piece of source code that occurs more than once in the same environment. Article "Duplicate code" in English Wikipedia has 29.8 points for quality (as of July 1, 2025). The article contains 12 references and 8 sections.

This article has the best quality in German Wikipedia. However, this article is the most popular in English version.

In June 2025 the article "Duplicate code" was edited by 2 authors in English Wikipedia and written by 5 authors in all languages.

Since the creation of article "Duplicate code", its content was written by 73 registered users of English Wikipedia and edited by 202 registered Wikipedia users in all languages.

The article is cited 65 times in English Wikipedia and cited 263 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #53593 in March 2016
  • Global: #62598 in August 2004

The highest popularity rank from 2008:

  • Local (English): #313758 in November 2014
  • Global: #363691 in December 2008

There are 15 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

Languages with the highest quality

#LanguageQuality gradeQuality score
1German (de)
Quelltextklon
38.0338
2Ukrainian (uk)
Дублювання коду
34.0167
3Hungarian (hu)
Kódduplikáció
32.0483
4English (en)
Duplicate code
29.8359
5Chinese (zh)
代码重复
29.365
6Indonesian (id)
Duplikasi kode
26.3874
7Korean (ko)
중복 코드
25.6338
8Persian (fa)
کد تکراری
24.5432
9Lithuanian (lt)
Pasikartojantis kodas
23.4874
10Arabic (ar)
تكرار الكود
18.9955
More...

The following table shows the most popular language versions of the article.

Most popular in all the time

The most popular language versions of the article "Duplicate code" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Duplicate code
362 512
2Japanese (ja)
重複コード
60 012
3German (de)
Quelltextklon
45 553
4Russian (ru)
Дублирование кода
32 850
5French (fr)
Duplication de code
24 882
6Spanish (es)
Código duplicado
18 629
7Chinese (zh)
代码重复
9 896
8Arabic (ar)
تكرار الكود
8 887
9Korean (ko)
중복 코드
4 127
10Ukrainian (uk)
Дублювання коду
3 206
More...

The following table shows the language versions of the article with the highest popularity in the last month.

Most popular in June 2025

The most popular language versions of the article "Duplicate code" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Duplicate code
1 365
2German (de)
Quelltextklon
81
3Japanese (ja)
重複コード
68
4Chinese (zh)
代码重复
68
5Russian (ru)
Дублирование кода
57
6French (fr)
Duplication de code
44
7Spanish (es)
Código duplicado
35
8Lithuanian (lt)
Pasikartojantis kodas
25
9Hungarian (hu)
Kódduplikáció
20
10Arabic (ar)
تكرار الكود
17
More...

The following table shows the language versions of the article with the highest Authors’ Interest.

The highest AI

Language versions of the article "Duplicate code" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Duplicate code
73
2German (de)
Quelltextklon
47
3Russian (ru)
Дублирование кода
14
4French (fr)
Duplication de code
11
5Ukrainian (uk)
Дублювання коду
11
6Japanese (ja)
重複コード
8
7Chinese (zh)
代码重复
8
8Hungarian (hu)
Kódduplikáció
7
9Persian (fa)
کد تکراری
5
10Lithuanian (lt)
Pasikartojantis kodas
5
More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

The highest AI in June 2025

Language versions of the article "Duplicate code" with the highest AI in June 2025
#LanguageAI awardRelative AI
1English (en)
Duplicate code
2
2Korean (ko)
중복 코드
2
3Hungarian (hu)
Kódduplikáció
1
4Arabic (ar)
تكرار الكود
0
5Czech (cs)
Duplikace kódu
0
6German (de)
Quelltextklon
0
7Spanish (es)
Código duplicado
0
8Persian (fa)
کد تکراری
0
9French (fr)
Duplication de code
0
10Indonesian (id)
Duplikasi kode
0
More...

The following table shows the language versions of the article with the highest number of citations.

The highest CI

Language versions of the article "Duplicate code" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1French (fr)
Duplication de code
66
2English (en)
Duplicate code
65
3German (de)
Quelltextklon
26
4Spanish (es)
Código duplicado
18
5Japanese (ja)
重複コード
17
6Chinese (zh)
代码重复
17
7Russian (ru)
Дублирование кода
10
8Korean (ko)
중복 코드
9
9Arabic (ar)
تكرار الكود
8
10Ukrainian (uk)
Дублювання коду
8
More...

Scores

Estimated value for Wikipedia:
English:
Global:
Popularity in June 2025:
English:
Global:
Popularity in all years:
English:
Global:
Authors in June 2025:
English:
Global:
Registered authors in all years:
English:
Global:
Citations:
English:
Global:

Quality measures

Interwikis

#LanguageValue
arArabic
تكرار الكود
csCzech
Duplikace kódu
deGerman
Quelltextklon
enEnglish
Duplicate code
esSpanish
Código duplicado
faPersian
کد تکراری
frFrench
Duplication de code
huHungarian
Kódduplikáció
idIndonesian
Duplikasi kode
jaJapanese
重複コード
koKorean
중복 코드
ltLithuanian
Pasikartojantis kodas
ruRussian
Дублирование кода
ukUkrainian
Дублювання коду
zhChinese
代码重复

Popularity rank trends

Best Rank English:
#313758
11.2014
Global:
#363691
12.2008

AI rank trends

Best Rank English:
#53593
03.2016
Global:
#62598
08.2004

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Duplicate code from Wikipedia articles about Abstract syntax tree, Dont repeat yourself, Computer programming, Software refactoring and Code smell. Whereas reading the article about Duplicate code people most often go to Wikipedia articles on Software rot, Brenda Baker, Rule of three, Dont repeat yourself and Copy-and-paste programming.

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

News from 9 July 2025

On 9 July 2025 in multilingual Wikipedia, Internet users most often read articles on the following topics: João Pedro Junqueira de Jesus, Belinda Bencic, 2025 FIFA Club World Cup, Flavio Cobolli, Ozzy Osbourne, Superman, Mirra Andreeva, Diogo Jota, Novak Djokovic, Christian Horner.

In English Wikipedia the most popular articles on that day were: Superman (2025 film), João Pedro (footballer, born 2001), Jurassic World Rebirth, Belinda Bencic, Christian Horner, Jannik Sinner, Jeffrey Epstein, Ozzy Osbourne, Deaths in 2025, Novak Djokovic.

About WikiRank

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information