Delete elements of list with certain length
I have a list containing some other lists having different lengths. I want to remove some of the lists with a certain length. For example, I have
a = {{0, 5, 2, 15, 6, 9, 3}, {1}, {5, 5, 5}, {4, 4, 5, 6}, {5}};
I want to remove some sub-lists of a having length 1. I mean, I want the result to be as
{{0, 5, 2, 15, 6, 9, 3}, {5, 5, 5}, {4, 4, 5, 6}}
How can I do that using Mathematica?
list-manipulation
asked Jan 3 at 6:38
Hadi SobhaniHadi Sobhani
37327
add a comment |
I have a list containing some other lists having different lengths. I want to remove some of the lists with a certain length. For example, I have
a = {{0, 5, 2, 15, 6, 9, 3}, {1}, {5, 5, 5}, {4, 4, 5, 6}, {5}};
I want to remove some sub-lists of a having length 1. I mean, I want the result to be as
{{0, 5, 2, 15, 6, 9, 3}, {5, 5, 5}, {4, 4, 5, 6}}
How can I do that using Mathematica?
list-manipulation
asked Jan 3 at 6:38
Hadi SobhaniHadi Sobhani
37327
add a comment |
I have a list containing some other lists having different lengths. I want to remove some of the lists with a certain length. For example, I have
a = {{0, 5, 2, 15, 6, 9, 3}, {1}, {5, 5, 5}, {4, 4, 5, 6}, {5}};
I want to remove some sub-lists of a having length 1. I mean, I want the result to be as
{{0, 5, 2, 15, 6, 9, 3}, {5, 5, 5}, {4, 4, 5, 6}}
How can I do that using Mathematica?
list-manipulation
asked Jan 3 at 6:38
Hadi SobhaniHadi Sobhani
37327
I have a list containing some other lists having different lengths. I want to remove some of the lists with a certain length. For example, I have
a = {{0, 5, 2, 15, 6, 9, 3}, {1}, {5, 5, 5}, {4, 4, 5, 6}, {5}};
I want to remove some sub-lists of a having length 1. I mean, I want the result to be as
{{0, 5, 2, 15, 6, 9, 3}, {5, 5, 5}, {4, 4, 5, 6}}
How can I do that using Mathematica?
list-manipulation
list-manipulation
asked Jan 3 at 6:38
Hadi SobhaniHadi Sobhani
37327
asked Jan 3 at 6:38
Hadi SobhaniHadi Sobhani
37327
asked Jan 3 at 6:38
Hadi SobhaniHadi Sobhani
37327
asked Jan 3 at 6:38
Hadi SobhaniHadi Sobhani
37327
asked Jan 3 at 6:38
Hadi SobhaniHadi Sobhani
37327
37327
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
Select[a, Length@# != 1 &]
{{0, 5, 2, 15, 6, 9, 3}, {5, 5, 5}, {4, 4, 5, 6}}
Also
GeneralUtilities`Discard[a, Length[#] == 1 &]
{{0, 5, 2, 15, 6, 9, 3}, {5, 5, 5}, {4, 4, 5, 6}}
and
DeleteCases[a, _?(Length@# == 1 &)]
{{0, 5, 2, 15, 6, 9, 3}, {5, 5, 5}, {4, 4, 5, 6}}
answered Jan 3 at 6:44
kglrkglr
178k9198409
add a comment |
This might be faster than klgr's solutions on large lists:
Pick[a, Unitize[Length /@ a - 1], 1]
Select and DeleteCases are known to be kind of slow.
answered Jan 3 at 12:46
C. E.C. E.
50.1k397202
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
Select[a, Length@# != 1 &]
{{0, 5, 2, 15, 6, 9, 3}, {5, 5, 5}, {4, 4, 5, 6}}
Also
GeneralUtilities`Discard[a, Length[#] == 1 &]
{{0, 5, 2, 15, 6, 9, 3}, {5, 5, 5}, {4, 4, 5, 6}}
and
DeleteCases[a, _?(Length@# == 1 &)]
{{0, 5, 2, 15, 6, 9, 3}, {5, 5, 5}, {4, 4, 5, 6}}
answered Jan 3 at 6:44
kglrkglr
178k9198409
add a comment |
Select[a, Length@# != 1 &]
{{0, 5, 2, 15, 6, 9, 3}, {5, 5, 5}, {4, 4, 5, 6}}
Also
GeneralUtilities`Discard[a, Length[#] == 1 &]
{{0, 5, 2, 15, 6, 9, 3}, {5, 5, 5}, {4, 4, 5, 6}}
and
DeleteCases[a, _?(Length@# == 1 &)]
{{0, 5, 2, 15, 6, 9, 3}, {5, 5, 5}, {4, 4, 5, 6}}
answered Jan 3 at 6:44
kglrkglr
178k9198409
add a comment |
Select[a, Length@# != 1 &]
{{0, 5, 2, 15, 6, 9, 3}, {5, 5, 5}, {4, 4, 5, 6}}
Also
GeneralUtilities`Discard[a, Length[#] == 1 &]
{{0, 5, 2, 15, 6, 9, 3}, {5, 5, 5}, {4, 4, 5, 6}}
and
DeleteCases[a, _?(Length@# == 1 &)]
{{0, 5, 2, 15, 6, 9, 3}, {5, 5, 5}, {4, 4, 5, 6}}
answered Jan 3 at 6:44
kglrkglr
178k9198409
Select[a, Length@# != 1 &]
{{0, 5, 2, 15, 6, 9, 3}, {5, 5, 5}, {4, 4, 5, 6}}
Also
GeneralUtilities`Discard[a, Length[#] == 1 &]
{{0, 5, 2, 15, 6, 9, 3}, {5, 5, 5}, {4, 4, 5, 6}}
and
DeleteCases[a, _?(Length@# == 1 &)]
{{0, 5, 2, 15, 6, 9, 3}, {5, 5, 5}, {4, 4, 5, 6}}
answered Jan 3 at 6:44
kglrkglr
178k9198409
edited Jan 3 at 9:03
answered Jan 3 at 6:44
kglrkglr
178k9198409
answered Jan 3 at 6:44
kglrkglr
178k9198409
answered Jan 3 at 6:44
kglrkglr
178k9198409
178k9198409
add a comment |
add a comment |
This might be faster than klgr's solutions on large lists:
Pick[a, Unitize[Length /@ a - 1], 1]
Select and DeleteCases are known to be kind of slow.
answered Jan 3 at 12:46
C. E.C. E.
50.1k397202
add a comment |
This might be faster than klgr's solutions on large lists:
Pick[a, Unitize[Length /@ a - 1], 1]
Select and DeleteCases are known to be kind of slow.
answered Jan 3 at 12:46
C. E.C. E.
50.1k397202
add a comment |
This might be faster than klgr's solutions on large lists:
Pick[a, Unitize[Length /@ a - 1], 1]
Select and DeleteCases are known to be kind of slow.
answered Jan 3 at 12:46
C. E.C. E.
50.1k397202
This might be faster than klgr's solutions on large lists:
Pick[a, Unitize[Length /@ a - 1], 1]
Select and DeleteCases are known to be kind of slow.
answered Jan 3 at 12:46
C. E.C. E.
50.1k397202
answered Jan 3 at 12:46
C. E.C. E.
50.1k397202
answered Jan 3 at 12:46
C. E.C. E.
50.1k397202
answered Jan 3 at 12:46
C. E.C. E.
50.1k397202
50.1k397202
add a comment |
add a comment |
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