How to drop certain elements in certain positions from a list using drop function
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up vote
3
down vote
favorite
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
32118
add a comment |
up vote
3
down vote
favorite
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
32118
add a comment |
up vote
3
down vote
favorite
up vote
3
down vote
favorite
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
32118
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
32118
asked Nov 29 at 7:22
acoustics
32118
asked Nov 29 at 7:22
acoustics
32118
asked Nov 29 at 7:22
acoustics
32118
asked Nov 29 at 7:22
acoustics
32118
32118
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
up vote
5
down vote
accepted
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
22.7k22051
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 |
up vote
3
down vote
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
175k9197402
add a comment |
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
5
down vote
accepted
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
22.7k22051
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 |
up vote
5
down vote
accepted
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
22.7k22051
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 |
up vote
5
down vote
accepted
up vote
5
down vote
accepted
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
22.7k22051
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
22.7k22051
answered Nov 29 at 7:25
David G. Stork
22.7k22051
answered Nov 29 at 7:25
David G. Stork
22.7k22051
answered Nov 29 at 7:25
David G. Stork
22.7k22051
22.7k22051
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 |
up vote
3
down vote
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
175k9197402
add a comment |
up vote
3
down vote
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
175k9197402
add a comment |
up vote
3
down vote
up vote
3
down vote
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
175k9197402
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
175k9197402
edited Nov 29 at 7:49
answered Nov 29 at 7:35
kglr
175k9197402
answered Nov 29 at 7:35
kglr
175k9197402
answered Nov 29 at 7:35
kglr
175k9197402
175k9197402
add a comment |
add a comment |
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