Selecting elements from a list where the order is set by another listHow to order a list to match the order of another list?Creating sums of elements from a listGenerating an ordered list of pairs of elements from ordered listsGenerating a random sample of elements from a list that includes a subset of the listDeleteDuplicates Delete elements of a listMatching the order of a master list of lists from a random list of listshow to apply Alternatives command to delete cases from a list?Adding multiplied corresponding elements from two different listsDelete elements of a list that appear in another listRemoving zeros from a list of equationsSelecting elements satisfying a condition
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Selecting elements from a list where the order is set by another list
How to order a list to match the order of another list?Creating sums of elements from a listGenerating an ordered list of pairs of elements from ordered listsGenerating a random sample of elements from a list that includes a subset of the listDeleteDuplicates Delete elements of a listMatching the order of a master list of lists from a random list of listshow to apply Alternatives command to delete cases from a list?Adding multiplied corresponding elements from two different listsDelete elements of a list that appear in another listRemoving zeros from a list of equationsSelecting elements satisfying a condition
$begingroup$
I have two lists, list A and list B. All of the elements of A are members of B. The order of B is fixed but the order of A is random. I need to arrange the elements in A as given in B.
Example let A
A=5,2,8
and B is
B=9,2,6,8,5,1
I need to reorder A to be:
A=2,8,5
I'm looking for a clever one-liner. This is similar to How to order a list to match the order of another list? but there the two lists have the same length. I tried some variations on adding some padding.
list-manipulation core-language
asked 4 hours ago
c186282c186282
833612
$endgroup$
add a comment |
$begingroup$
I have two lists, list A and list B. All of the elements of A are members of B. The order of B is fixed but the order of A is random. I need to arrange the elements in A as given in B.
Example let A
A=5,2,8
and B is
B=9,2,6,8,5,1
I need to reorder A to be:
A=2,8,5
I'm looking for a clever one-liner. This is similar to How to order a list to match the order of another list? but there the two lists have the same length. I tried some variations on adding some padding.
list-manipulation core-language
asked 4 hours ago
c186282c186282
833612
$endgroup$
add a comment |
$begingroup$
I have two lists, list A and list B. All of the elements of A are members of B. The order of B is fixed but the order of A is random. I need to arrange the elements in A as given in B.
Example let A
A=5,2,8
and B is
B=9,2,6,8,5,1
I need to reorder A to be:
A=2,8,5
I'm looking for a clever one-liner. This is similar to How to order a list to match the order of another list? but there the two lists have the same length. I tried some variations on adding some padding.
list-manipulation core-language
asked 4 hours ago
c186282c186282
833612
$endgroup$
I have two lists, list A and list B. All of the elements of A are members of B. The order of B is fixed but the order of A is random. I need to arrange the elements in A as given in B.
Example let A
A=5,2,8
and B is
B=9,2,6,8,5,1
I need to reorder A to be:
A=2,8,5
I'm looking for a clever one-liner. This is similar to How to order a list to match the order of another list? but there the two lists have the same length. I tried some variations on adding some padding.
list-manipulation core-language
list-manipulation core-language
asked 4 hours ago
c186282c186282
833612
asked 4 hours ago
c186282c186282
833612
asked 4 hours ago
c186282c186282
833612
asked 4 hours ago
c186282c186282
833612
asked 4 hours ago
c186282c186282
833612
833612
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
$begingroup$
SortBy[FirstPosition[#] @B&]@A
2, 8, 5
Also,
Cases[Alternatives @@ A] @ B
2, 8, 5
DeleteCases[Except[Alternatives @@ A]] @ B
2, 8, 5
answered 4 hours ago
kglrkglr
191k10210430
$endgroup$
2
$begingroup$
Cases[B, Alternatives@@A]is real-world poetry.
$endgroup$
– Roman
29 mins ago
$begingroup$
+1. Also:SortBy[A, PositionIndex[B]]
$endgroup$
– WReach
2 mins ago
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
SortBy[FirstPosition[#] @B&]@A
2, 8, 5
Also,
Cases[Alternatives @@ A] @ B
2, 8, 5
DeleteCases[Except[Alternatives @@ A]] @ B
2, 8, 5
answered 4 hours ago
kglrkglr
191k10210430
$endgroup$
2
$begingroup$
Cases[B, Alternatives@@A]is real-world poetry.
$endgroup$
– Roman
29 mins ago
$begingroup$
+1. Also:SortBy[A, PositionIndex[B]]
$endgroup$
– WReach
2 mins ago
add a comment |
$begingroup$
SortBy[FirstPosition[#] @B&]@A
2, 8, 5
Also,
Cases[Alternatives @@ A] @ B
2, 8, 5
DeleteCases[Except[Alternatives @@ A]] @ B
2, 8, 5
answered 4 hours ago
kglrkglr
191k10210430
$endgroup$
2
$begingroup$
Cases[B, Alternatives@@A]is real-world poetry.
$endgroup$
– Roman
29 mins ago
$begingroup$
+1. Also:SortBy[A, PositionIndex[B]]
$endgroup$
– WReach
2 mins ago
add a comment |
$begingroup$
SortBy[FirstPosition[#] @B&]@A
2, 8, 5
Also,
Cases[Alternatives @@ A] @ B
2, 8, 5
DeleteCases[Except[Alternatives @@ A]] @ B
2, 8, 5
answered 4 hours ago
kglrkglr
191k10210430
$endgroup$
SortBy[FirstPosition[#] @B&]@A
2, 8, 5
Also,
Cases[Alternatives @@ A] @ B
2, 8, 5
DeleteCases[Except[Alternatives @@ A]] @ B
2, 8, 5
answered 4 hours ago
kglrkglr
191k10210430
edited 25 mins ago
answered 4 hours ago
kglrkglr
191k10210430
answered 4 hours ago
kglrkglr
191k10210430
answered 4 hours ago
kglrkglr
191k10210430
191k10210430
2
$begingroup$
Cases[B, Alternatives@@A]is real-world poetry.
$endgroup$
– Roman
29 mins ago
$begingroup$
+1. Also:SortBy[A, PositionIndex[B]]
$endgroup$
– WReach
2 mins ago
add a comment |
2
$begingroup$
Cases[B, Alternatives@@A]is real-world poetry.
$endgroup$
– Roman
29 mins ago
$begingroup$
+1. Also:SortBy[A, PositionIndex[B]]
$endgroup$
– WReach
2 mins ago
2
2
$begingroup$
Cases[B, Alternatives@@A] is real-world poetry.$endgroup$
– Roman
29 mins ago
$begingroup$
Cases[B, Alternatives@@A] is real-world poetry.$endgroup$
– Roman
29 mins ago
$begingroup$
+1. Also:
SortBy[A, PositionIndex[B]]$endgroup$
– WReach
2 mins ago
$begingroup$
+1. Also:
SortBy[A, PositionIndex[B]]$endgroup$
– WReach
2 mins ago
add a comment |
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