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StringTools

  

SortPermutation

  

return a permutation that sorts a list of strings

 

Calling Sequence

Parameters

Description

Examples

Calling Sequence

SortPermutation( los )

Parameters

los

-

list(string); a list of strings

Description

• 

The SortPermutation( los ) command returns a permutation p that sorts the list los, that is, for which seqlospi,i=1..nopslos is equal to sortlos. The sorting order is lexicographic.

• 

The permutation returned by SortPermutation is represented as a list of the positive integers from 1 to nopslos.

• 

Note that an empty list, which is vacuously a permutation, is returned if the input list los is empty.

Examples

withStringTools:

Lb,c,a:

pSortPermutationL

p:=3,1,2

(1)

typep,'permlist'

true

(2)

seqLpi,i=1..3

a,b,c

(3)

sortL

a,b,c

(4)

SortPermutation

(5)

See Also

sort

string

StringTools

 


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