UniqueElements

UniqueElements[{list1,list2,…}]

gives the elements for each listi that are not in any other list.

UniqueElements[lists,test]

uses test to determine whether pairs of elements should be considered equivalent.

Details

  • UniqueElements[{list1,list2,…,listn}] returns another list of length n, with elements being sublists of the corresponding inputs lists.
  • Order of elements in the original lists is preserved in output. Multiplicity is not preserved.
  • The listi must have the same head, but it need not be List.

Examples

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Basic Examples  (3)

Remove from each list those elements that occur in the other list:

Find letters that are unique to a list of alphabets:

Identify outliers in lists of temporal units:

Properties & Relations  (3)

UniqueElements returns a list of the same length as the input:

UniqueElements[{}] is {}:

UniqueElements[{l1,l2,…}] effectively complements each list li with all other lists:

Order of elements in the original lists is preserved, but multiplicity is not:

Wolfram Research (2022), UniqueElements, Wolfram Language function, https://reference.wolfram.com/language/ref/UniqueElements.html.

Text

Wolfram Research (2022), UniqueElements, Wolfram Language function, https://reference.wolfram.com/language/ref/UniqueElements.html.

CMS

Wolfram Language. 2022. "UniqueElements." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/UniqueElements.html.

APA

Wolfram Language. (2022). UniqueElements. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/UniqueElements.html

BibTeX

@misc{reference.wolfram_2024_uniqueelements, author="Wolfram Research", title="{UniqueElements}", year="2022", howpublished="\url{https://reference.wolfram.com/language/ref/UniqueElements.html}", note=[Accessed: 21-November-2024 ]}

BibLaTeX

@online{reference.wolfram_2024_uniqueelements, organization={Wolfram Research}, title={UniqueElements}, year={2022}, url={https://reference.wolfram.com/language/ref/UniqueElements.html}, note=[Accessed: 21-November-2024 ]}