How to group numbers by predefined sum
Clash Royale CLAN TAG#URR8PPP
0
Data is in two columns (number and description):
1,item1
8,item2
4,item3
9,item4
The sum (using number column) is predefined 10 and input data should be ordered as close to that as possible (but not exceed it):
group1:
1,item1
9,item4
group2:
8,item2
group3:
4,item3
How to do it in shell script?
shell scripting
migrated from unix.stackexchange.com Jan 26 at 20:35
This question came from our site for users of Linux, FreeBSD and other Un*x-like operating systems.
|
show 2 more comments
0
Data is in two columns (number and description):
1,item1
8,item2
4,item3
9,item4
The sum (using number column) is predefined 10 and input data should be ordered as close to that as possible (but not exceed it):
group1:
1,item1
9,item4
group2:
8,item2
group3:
4,item3
How to do it in shell script?
shell scripting
migrated from unix.stackexchange.com Jan 26 at 20:35
This question came from our site for users of Linux, FreeBSD and other Un*x-like operating systems.
2
Did you do anything yourself? Do you have an algorithm? Why would two groups of 8 and 4 be closer to 10 than one group of 8 and 4?
– Tomasz
Jan 26 at 19:44
This is the bin packing problem. This is an NP-hard problem to solve (i.e. not trivial). I wrote a few lines ofzshdo do it for file sizes here: "Group files into average size of the largest file", but really, it's a bit outside the scope of this site.
– Kusalananda
Jan 26 at 19:46
Atm I have not write code yet. I'm thinking smb like first sort lines by number and then loop sum til 10 is reached and group1 is complete.. then next lines. Maybe someone knows some program that can already do that. @Tomasz 8 and 4 are not closer to 10 but you can't make any more groups ie. they would exceed 10 whitch is not allowed. Smaller groups are ok.
– Mart
Jan 26 at 20:13
You should be able to take the code I linked to and modify it to fit your needs. It's currently getting filenames and file sizes, but you could change that to be your strings and numbers.
– Kusalananda
Jan 26 at 20:18
thanks @Kusalananda I'm looking it :)
– Mart
Jan 26 at 20:21
|
show 2 more comments
0
0
0
Data is in two columns (number and description):
1,item1
8,item2
4,item3
9,item4
The sum (using number column) is predefined 10 and input data should be ordered as close to that as possible (but not exceed it):
group1:
1,item1
9,item4
group2:
8,item2
group3:
4,item3
How to do it in shell script?
shell scripting
Data is in two columns (number and description):
1,item1
8,item2
4,item3
9,item4
The sum (using number column) is predefined 10 and input data should be ordered as close to that as possible (but not exceed it):
group1:
1,item1
9,item4
group2:
8,item2
group3:
4,item3
How to do it in shell script?
shell scripting
shell scripting
asked Jan 26 at 19:33
Mart
migrated from unix.stackexchange.com Jan 26 at 20:35
This question came from our site for users of Linux, FreeBSD and other Un*x-like operating systems.
migrated from unix.stackexchange.com Jan 26 at 20:35
This question came from our site for users of Linux, FreeBSD and other Un*x-like operating systems.
2
Did you do anything yourself? Do you have an algorithm? Why would two groups of 8 and 4 be closer to 10 than one group of 8 and 4?
– Tomasz
Jan 26 at 19:44
This is the bin packing problem. This is an NP-hard problem to solve (i.e. not trivial). I wrote a few lines ofzshdo do it for file sizes here: "Group files into average size of the largest file", but really, it's a bit outside the scope of this site.
– Kusalananda
Jan 26 at 19:46
Atm I have not write code yet. I'm thinking smb like first sort lines by number and then loop sum til 10 is reached and group1 is complete.. then next lines. Maybe someone knows some program that can already do that. @Tomasz 8 and 4 are not closer to 10 but you can't make any more groups ie. they would exceed 10 whitch is not allowed. Smaller groups are ok.
– Mart
Jan 26 at 20:13
You should be able to take the code I linked to and modify it to fit your needs. It's currently getting filenames and file sizes, but you could change that to be your strings and numbers.
– Kusalananda
Jan 26 at 20:18
thanks @Kusalananda I'm looking it :)
– Mart
Jan 26 at 20:21
|
show 2 more comments
2
Did you do anything yourself? Do you have an algorithm? Why would two groups of 8 and 4 be closer to 10 than one group of 8 and 4?
– Tomasz
Jan 26 at 19:44
This is the bin packing problem. This is an NP-hard problem to solve (i.e. not trivial). I wrote a few lines ofzshdo do it for file sizes here: "Group files into average size of the largest file", but really, it's a bit outside the scope of this site.
– Kusalananda
Jan 26 at 19:46
Atm I have not write code yet. I'm thinking smb like first sort lines by number and then loop sum til 10 is reached and group1 is complete.. then next lines. Maybe someone knows some program that can already do that. @Tomasz 8 and 4 are not closer to 10 but you can't make any more groups ie. they would exceed 10 whitch is not allowed. Smaller groups are ok.
– Mart
Jan 26 at 20:13
You should be able to take the code I linked to and modify it to fit your needs. It's currently getting filenames and file sizes, but you could change that to be your strings and numbers.
– Kusalananda
Jan 26 at 20:18
thanks @Kusalananda I'm looking it :)
– Mart
Jan 26 at 20:21
2
2
Did you do anything yourself? Do you have an algorithm? Why would two groups of 8 and 4 be closer to 10 than one group of 8 and 4?
– Tomasz
Jan 26 at 19:44
Did you do anything yourself? Do you have an algorithm? Why would two groups of 8 and 4 be closer to 10 than one group of 8 and 4?
– Tomasz
Jan 26 at 19:44
This is the bin packing problem. This is an NP-hard problem to solve (i.e. not trivial). I wrote a few lines of
zsh do do it for file sizes here: "Group files into average size of the largest file", but really, it's a bit outside the scope of this site.– Kusalananda
Jan 26 at 19:46
This is the bin packing problem. This is an NP-hard problem to solve (i.e. not trivial). I wrote a few lines of
zsh do do it for file sizes here: "Group files into average size of the largest file", but really, it's a bit outside the scope of this site.– Kusalananda
Jan 26 at 19:46
Atm I have not write code yet. I'm thinking smb like first sort lines by number and then loop sum til 10 is reached and group1 is complete.. then next lines. Maybe someone knows some program that can already do that. @Tomasz 8 and 4 are not closer to 10 but you can't make any more groups ie. they would exceed 10 whitch is not allowed. Smaller groups are ok.
– Mart
Jan 26 at 20:13
Atm I have not write code yet. I'm thinking smb like first sort lines by number and then loop sum til 10 is reached and group1 is complete.. then next lines. Maybe someone knows some program that can already do that. @Tomasz 8 and 4 are not closer to 10 but you can't make any more groups ie. they would exceed 10 whitch is not allowed. Smaller groups are ok.
– Mart
Jan 26 at 20:13
You should be able to take the code I linked to and modify it to fit your needs. It's currently getting filenames and file sizes, but you could change that to be your strings and numbers.
– Kusalananda
Jan 26 at 20:18
You should be able to take the code I linked to and modify it to fit your needs. It's currently getting filenames and file sizes, but you could change that to be your strings and numbers.
– Kusalananda
Jan 26 at 20:18
thanks @Kusalananda I'm looking it :)
– Mart
Jan 26 at 20:21
thanks @Kusalananda I'm looking it :)
– Mart
Jan 26 at 20:21
|
show 2 more comments
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2
Did you do anything yourself? Do you have an algorithm? Why would two groups of 8 and 4 be closer to 10 than one group of 8 and 4?
– Tomasz
Jan 26 at 19:44
This is the bin packing problem. This is an NP-hard problem to solve (i.e. not trivial). I wrote a few lines of
zshdo do it for file sizes here: "Group files into average size of the largest file", but really, it's a bit outside the scope of this site.– Kusalananda
Jan 26 at 19:46
Atm I have not write code yet. I'm thinking smb like first sort lines by number and then loop sum til 10 is reached and group1 is complete.. then next lines. Maybe someone knows some program that can already do that. @Tomasz 8 and 4 are not closer to 10 but you can't make any more groups ie. they would exceed 10 whitch is not allowed. Smaller groups are ok.
– Mart
Jan 26 at 20:13
You should be able to take the code I linked to and modify it to fit your needs. It's currently getting filenames and file sizes, but you could change that to be your strings and numbers.
– Kusalananda
Jan 26 at 20:18
thanks @Kusalananda I'm looking it :)
– Mart
Jan 26 at 20:21