How to drop certain elements in certain positions from a list using drop function
a = Table[i, {i, 1, 10}]
Drop[a, {5, 8}]
If go with the above procedure, It will delete all the elements from between position 5 to 8. How to drop elements which are a position 5 and position 8 using drop function.
list-manipulation matrix
asked Nov 29 at 7:22
acoustics
36919
add a comment |
a = Table[i, {i, 1, 10}]
Drop[a, {5, 8}]
If go with the above procedure, It will delete all the elements from between position 5 to 8. How to drop elements which are a position 5 and position 8 using drop function.
list-manipulation matrix
asked Nov 29 at 7:22
acoustics
36919
add a comment |
a = Table[i, {i, 1, 10}]
Drop[a, {5, 8}]
If go with the above procedure, It will delete all the elements from between position 5 to 8. How to drop elements which are a position 5 and position 8 using drop function.
list-manipulation matrix
asked Nov 29 at 7:22
acoustics
36919
a = Table[i, {i, 1, 10}]
Drop[a, {5, 8}]
If go with the above procedure, It will delete all the elements from between position 5 to 8. How to drop elements which are a position 5 and position 8 using drop function.
list-manipulation matrix
list-manipulation matrix
asked Nov 29 at 7:22
acoustics
36919
asked Nov 29 at 7:22
acoustics
36919
asked Nov 29 at 7:22
acoustics
36919
asked Nov 29 at 7:22
acoustics
36919
asked Nov 29 at 7:22
acoustics
36919
36919
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
Use instead Delete, in this way:
a = Table[i, {i, 1, 10}];
Delete[a, {{5}, {8}}]
(*
{1, 2, 3, 4, 6, 7, 9, 10}
*)
By the way, you can be far more efficient:
a = Range[10]
answered Nov 29 at 7:25
David G. Stork
23k22051
can we give the list of position which I wanted to drop like {3,5,8,9}
– acoustics
Nov 29 at 7:49
2
Delete[a,{{3},{5},{8},{9}}]
– David G. Stork
Nov 29 at 7:50
1
AlsoDelete[a, Partition[{3, 5, 8, 9}, 1]]comes to mind... if the list of positions gets longer.
– Henrik Schumacher
Nov 29 at 8:04
add a comment |
Drop[a, {5, 8, 3}]
{1, 2, 3, 4, 6, 7, 9, 10}
Fold[Drop[#, {#2}] &, a, Reverse[{5, 8}]]
{1, 2, 3, 4, 6, 7, 9, 10}
answered Nov 29 at 7:35
kglr
176k9197402
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
Use instead Delete, in this way:
a = Table[i, {i, 1, 10}];
Delete[a, {{5}, {8}}]
(*
{1, 2, 3, 4, 6, 7, 9, 10}
*)
By the way, you can be far more efficient:
a = Range[10]
answered Nov 29 at 7:25
David G. Stork
23k22051
can we give the list of position which I wanted to drop like {3,5,8,9}
– acoustics
Nov 29 at 7:49
2
Delete[a,{{3},{5},{8},{9}}]
– David G. Stork
Nov 29 at 7:50
1
AlsoDelete[a, Partition[{3, 5, 8, 9}, 1]]comes to mind... if the list of positions gets longer.
– Henrik Schumacher
Nov 29 at 8:04
add a comment |
Use instead Delete, in this way:
a = Table[i, {i, 1, 10}];
Delete[a, {{5}, {8}}]
(*
{1, 2, 3, 4, 6, 7, 9, 10}
*)
By the way, you can be far more efficient:
a = Range[10]
answered Nov 29 at 7:25
David G. Stork
23k22051
can we give the list of position which I wanted to drop like {3,5,8,9}
– acoustics
Nov 29 at 7:49
2
Delete[a,{{3},{5},{8},{9}}]
– David G. Stork
Nov 29 at 7:50
1
AlsoDelete[a, Partition[{3, 5, 8, 9}, 1]]comes to mind... if the list of positions gets longer.
– Henrik Schumacher
Nov 29 at 8:04
add a comment |
Use instead Delete, in this way:
a = Table[i, {i, 1, 10}];
Delete[a, {{5}, {8}}]
(*
{1, 2, 3, 4, 6, 7, 9, 10}
*)
By the way, you can be far more efficient:
a = Range[10]
answered Nov 29 at 7:25
David G. Stork
23k22051
Use instead Delete, in this way:
a = Table[i, {i, 1, 10}];
Delete[a, {{5}, {8}}]
(*
{1, 2, 3, 4, 6, 7, 9, 10}
*)
By the way, you can be far more efficient:
a = Range[10]
answered Nov 29 at 7:25
David G. Stork
23k22051
answered Nov 29 at 7:25
David G. Stork
23k22051
answered Nov 29 at 7:25
David G. Stork
23k22051
answered Nov 29 at 7:25
David G. Stork
23k22051
23k22051
can we give the list of position which I wanted to drop like {3,5,8,9}
– acoustics
Nov 29 at 7:49
2
Delete[a,{{3},{5},{8},{9}}]
– David G. Stork
Nov 29 at 7:50
1
AlsoDelete[a, Partition[{3, 5, 8, 9}, 1]]comes to mind... if the list of positions gets longer.
– Henrik Schumacher
Nov 29 at 8:04
add a comment |
can we give the list of position which I wanted to drop like {3,5,8,9}
– acoustics
Nov 29 at 7:49
2
Delete[a,{{3},{5},{8},{9}}]
– David G. Stork
Nov 29 at 7:50
1
AlsoDelete[a, Partition[{3, 5, 8, 9}, 1]]comes to mind... if the list of positions gets longer.
– Henrik Schumacher
Nov 29 at 8:04
can we give the list of position which I wanted to drop like {3,5,8,9}
– acoustics
Nov 29 at 7:49
can we give the list of position which I wanted to drop like {3,5,8,9}
– acoustics
Nov 29 at 7:49
2
2
Delete[a,{{3},{5},{8},{9}}]– David G. Stork
Nov 29 at 7:50
Delete[a,{{3},{5},{8},{9}}]– David G. Stork
Nov 29 at 7:50
1
1
Also
Delete[a, Partition[{3, 5, 8, 9}, 1]] comes to mind... if the list of positions gets longer.– Henrik Schumacher
Nov 29 at 8:04
Also
Delete[a, Partition[{3, 5, 8, 9}, 1]] comes to mind... if the list of positions gets longer.– Henrik Schumacher
Nov 29 at 8:04
add a comment |
Drop[a, {5, 8, 3}]
{1, 2, 3, 4, 6, 7, 9, 10}
Fold[Drop[#, {#2}] &, a, Reverse[{5, 8}]]
{1, 2, 3, 4, 6, 7, 9, 10}
answered Nov 29 at 7:35
kglr
176k9197402
add a comment |
Drop[a, {5, 8, 3}]
{1, 2, 3, 4, 6, 7, 9, 10}
Fold[Drop[#, {#2}] &, a, Reverse[{5, 8}]]
{1, 2, 3, 4, 6, 7, 9, 10}
answered Nov 29 at 7:35
kglr
176k9197402
add a comment |
Drop[a, {5, 8, 3}]
{1, 2, 3, 4, 6, 7, 9, 10}
Fold[Drop[#, {#2}] &, a, Reverse[{5, 8}]]
{1, 2, 3, 4, 6, 7, 9, 10}
answered Nov 29 at 7:35
kglr
176k9197402
Drop[a, {5, 8, 3}]
{1, 2, 3, 4, 6, 7, 9, 10}
Fold[Drop[#, {#2}] &, a, Reverse[{5, 8}]]
{1, 2, 3, 4, 6, 7, 9, 10}
answered Nov 29 at 7:35
kglr
176k9197402
edited Nov 29 at 7:49
answered Nov 29 at 7:35
kglr
176k9197402
answered Nov 29 at 7:35
kglr
176k9197402
answered Nov 29 at 7:35
kglr
176k9197402
176k9197402
add a comment |
add a comment |
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