LongestCommonSubsequencePositions

LongestCommonSubsequencePositions[s1,s2]

finds the longest contiguous subsequence of elements common to the strings, biomolecular sequences or lists s1 and s2 and returns their positions {pos1,pos2} in s1 and s2.

Details and Options

  • For lists si, Take[si,posi] returns the longest common subsequence. For strings si, StringTake[si,posi] returns the longest common contiguous substring.
  • If there are several common subsequences of the same length, LongestCommonSubsequencePositions returns the position of the one that appears earliest in s1.
  • For strings, setting the option IgnoreCase->True makes LongestCommonSubsequencePositions treat lowercase and uppercase letters as equivalent, and returns the form of common subsequence that occurs in s1.

Examples

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Basic Examples  (3)

Find the longest contiguous subsequence common to two strings:

Find the longest contiguous subsequence common to two lists:

Find the longest contiguous subsequence common to two biomolecular sequences:

Scope  (2)

Act on two strings:

Act on two lists of expressions:

Options  (1)

IgnoreCase  (1)

By default, LongestCommonSubsequencePositions distinguishes lower and upper case:

Ignore case:

Applications  (1)

Longest contiguous DNA subsequence of two genes:

Properties & Relations  (1)

Take two strings:

Find the positions of the longest common sequence of characters:

The corresponding strings coincide:

LongestCommonSubsequence returns those strings joined:

Wolfram Research (2015), LongestCommonSubsequencePositions, Wolfram Language function, https://reference.wolfram.com/language/ref/LongestCommonSubsequencePositions.html.

Text

Wolfram Research (2015), LongestCommonSubsequencePositions, Wolfram Language function, https://reference.wolfram.com/language/ref/LongestCommonSubsequencePositions.html.

CMS

Wolfram Language. 2015. "LongestCommonSubsequencePositions." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/LongestCommonSubsequencePositions.html.

APA

Wolfram Language. (2015). LongestCommonSubsequencePositions. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/LongestCommonSubsequencePositions.html

BibTeX

@misc{reference.wolfram_2024_longestcommonsubsequencepositions, author="Wolfram Research", title="{LongestCommonSubsequencePositions}", year="2015", howpublished="\url{https://reference.wolfram.com/language/ref/LongestCommonSubsequencePositions.html}", note=[Accessed: 18-November-2024 ]}

BibLaTeX

@online{reference.wolfram_2024_longestcommonsubsequencepositions, organization={Wolfram Research}, title={LongestCommonSubsequencePositions}, year={2015}, url={https://reference.wolfram.com/language/ref/LongestCommonSubsequencePositions.html}, note=[Accessed: 18-November-2024 ]}