Longest common substring

en

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Longest common substring

Quality:

Longest common substring problem - problem of finding the longest string that is a substring of two or more strings. Article “Longest common substring” in English Wikipedia has 22.7 points for quality (as of July 1, 2026). The article contains 2 references and 8 sections.

In this language version of Wikipedia the article has the best quality. Also, this article is the most popular in that (English) language version.

Since the creation of article “Longest common substring”, its content was written by 76 registered users of English Wikipedia and edited by 145 registered Wikipedia users in all languages.

The article is cited 63 times in English Wikipedia and cited 166 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #46260 in January 2023
  • Global: #112558 in July 2012

The highest popularity rank from 2008:

  • Local (English): #66267 in September 2014
  • Global: #126330 in September 2014

There are 10 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, 2026 (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
1English (en)
Longest common substring
22.7488
2Chinese (zh)
最长公共子串
16.087
3Persian (fa)
بزرگترین زیررشته مشترک
11.1067
4French (fr)
Plus longue sous-chaîne commune
10.9602
5Vietnamese (vi)
Bài toán xâu con chung dài nhất
9.5112
6Polish (pl)
Najdłuższy wspólny podłańcuch
8.533
7Czech (cs)
Hledání nejdelšího společného podslova
5.7877
8Russian (ru)
Наибольшая общая подстрока
2.2934
9Arabic (ar)
أطول سلسلة فرعية مشتركة
1.5578
10Ukrainian (uk)
Найдовший спільний підрядок
0.4357
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 "Longest common substring" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Longest common substring
1 234 821
2Russian (ru)
Наибольшая общая подстрока
84 466
3Vietnamese (vi)
Bài toán xâu con chung dài nhất
47 424
4Chinese (zh)
最长公共子串
18 192
5French (fr)
Plus longue sous-chaîne commune
10 258
6Polish (pl)
Najdłuższy wspólny podłańcuch
10 047
7Persian (fa)
بزرگترین زیررشته مشترک
8 764
8Czech (cs)
Hledání nejdelšího společného podslova
502
9Ukrainian (uk)
Найдовший спільний підрядок
474
10Arabic (ar)
أطول سلسلة فرعية مشتركة
242
More...

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

Most popular in June 2026

The most popular language versions of the article "Longest common substring" in June 2026
#LanguagePopularity awardRelative popularity
1English (en)
Longest common substring
801
2Chinese (zh)
最长公共子串
51
3Russian (ru)
Наибольшая общая подстрока
45
4French (fr)
Plus longue sous-chaîne commune
32
5Persian (fa)
بزرگترین زیررشته مشترک
21
6Vietnamese (vi)
Bài toán xâu con chung dài nhất
12
7Czech (cs)
Hledání nejdelšího společného podslova
5
8Polish (pl)
Najdłuższy wspólny podłańcuch
4
9Ukrainian (uk)
Найдовший спільний підрядок
4
10Arabic (ar)
أطول سلسلة فرعية مشتركة
0
More...

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

The highest AI

Language versions of the article "Longest common substring" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Longest common substring
76
2Russian (ru)
Наибольшая общая подстрока
16
3Vietnamese (vi)
Bài toán xâu con chung dài nhất
16
4Persian (fa)
بزرگترین زیررشته مشترک
11
5French (fr)
Plus longue sous-chaîne commune
8
6Polish (pl)
Najdłuższy wspólny podłańcuch
7
7Chinese (zh)
最长公共子串
4
8Arabic (ar)
أطول سلسلة فرعية مشتركة
3
9Czech (cs)
Hledání nejdelšího společného podslova
2
10Ukrainian (uk)
Найдовший спільний підрядок
2
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 2026

Language versions of the article "Longest common substring" with the highest AI in June 2026
#LanguageAI awardRelative AI
1Arabic (ar)
أطول سلسلة فرعية مشتركة
0
2Czech (cs)
Hledání nejdelšího společného podslova
0
3English (en)
Longest common substring
0
4Persian (fa)
بزرگترین زیررشته مشترک
0
5French (fr)
Plus longue sous-chaîne commune
0
6Polish (pl)
Najdłuższy wspólny podłańcuch
0
7Russian (ru)
Наибольшая общая подстрока
0
8Ukrainian (uk)
Найдовший спільний підрядок
0
9Vietnamese (vi)
Bài toán xâu con chung dài nhất
0
10Chinese (zh)
最长公共子串
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 "Longest common substring" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Longest common substring
63
2French (fr)
Plus longue sous-chaîne commune
25
3Russian (ru)
Наибольшая общая подстрока
24
4Ukrainian (uk)
Найдовший спільний підрядок
22
5Chinese (zh)
最长公共子串
19
6Persian (fa)
بزرگترین زیررشته مشترک
7
7Vietnamese (vi)
Bài toán xâu con chung dài nhất
4
8Czech (cs)
Hledání nejdelšího společného podslova
1
9Polish (pl)
Najdłuższy wspólny podłańcuch
1
10Arabic (ar)
أطول سلسلة فرعية مشتركة
0
More...

Scores

Estimated value for Wikipedia:
English:
Global:
Popularity in June 2026:
English:
Global:
Popularity in all years:
English:
Global:
Authors in June 2026:
English:
Global:
Registered authors in all years:
English:
Global:
Citations:
English:
Global:

Quality measures

Interwikis

#LanguageValue
arArabic
أطول سلسلة فرعية مشتركة
csCzech
Hledání nejdelšího společného podslova
enEnglish
Longest common substring
faPersian
بزرگترین زیررشته مشترک
frFrench
Plus longue sous-chaîne commune
plPolish
Najdłuższy wspólny podłańcuch
ruRussian
Наибольшая общая подстрока
ukUkrainian
Найдовший спільний підрядок
viVietnamese
Bài toán xâu con chung dài nhất
zhChinese
最长公共子串

Popularity rank trends

Best Rank English:
#66267
09.2014
Global:
#126330
09.2014

AI rank trends

Best Rank English:
#46260
01.2023
Global:
#112558
07.2012

Languages comparison

Important global interconnections (July 2025 – June 2026)

Cumulative results of quality and popularity of the Wikipedia article

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

News from 1 July 2026

On 1 July 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 2026 FIFA World Cup, Kylian Mbappé, Erling Haaland, Democratic Republic of the Congo, FIFA World Cup, Harry Kane, Romelu Lukaku, Senegal, Michael Olise, Sadio Mané.

In English Wikipedia the most popular articles on that day were: 2026 FIFA World Cup, Harry Kane, Julián Quiñones, List of FIFA World Cup top goalscorers, Kylian Mbappé, Democratic Republic of the Congo, Erling Haaland, DR Congo national football team, Melat Kiros, FIFA World Cup.

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 50 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2026. When calculating current popularity and AI of articles data from June 2026 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2026... More information