第三行的总和并相应地划分行 [英] sum value of a 3rd row and divide rows accordingly

问题描述

我有一个下面的文件，其中的行数为n，我希望将其总和(基于第3列)并相应地将行分配到3个不同的文件中(基于每个文件的总和)

I have a file as below with n number of rows, I want to total it's sum(based on 3rd column) and distribute rows accordingly in 3 different files(based on sum of each)

例如-如果我们将所有第3列的值相加，则总计为516，如果将其除以3，则为172.

For example- if we sum all the 3rd column values it's total is coming as 516 and if we divide it by 3 it is 172.

因此，我想向文件中添加一行，以使其不超过172个标记，与第二个文件相同，其余所有行应移至第三个文件.

So i want to add a rows to a file so it doesn't exceed 172 mark, same with the 2nd file and rest all rows should move to the third file.

输入文件

a aa 10
b ab 15
c ac 17
a dy 30
y ae 12
a dl 34
a fk 45
l ah 56
o aj 76 
l ai 12 
q al 09
d pl 34
e ik 30
f ll 10
g dl 15 
h fr 17
i dd 23
j we 27
k rt 12
l yt 13
m tt 19

预期产量

file1(total -163)


a   aa  10
b   ab  15
c   ac  17
a   dy  30
y   ae  12
a   dl  34
a   fk  45

file2(共153个)

file2 (total-153)

l   ah  56
o   aj  76
l   ai  12
q   al  9

file3(总计-200个)

file3 (total - 200)

d   pl  34
e   ik  30
f   ll  10
g   dl  15
h   fr  17
i   dd  23
j   we  27
k   rt  12
l   yt  13
m   tt  19

推荐答案

能否请您按照GNU awk中显示的示例进行尝试，编写和测试.

Could you please try following, written and tested with shown samples in GNU awk.

awk '
FNR==NR{
  sum+=$NF
  next
}
FNR==1{
  count=sum/3
}
{
  curr_sum+=$NF
}
(curr_sum>=count || FNR==1) && fileCnt<=2{
  close(out_file)
  out_file="file" ++fileCnt
  curr_sum=$NF
}
{
  print > (out_file)
}'   Input_file  Input_file

说明: ，为此添加了详细说明.

Explanation: Adding detailed explanation for above.

awk '                                               ##Starting awk program from here.
FNR==NR{                                            ##Checking condition FNR==NR which will be TRUE when first time Input_file is being read.
  sum+=$NF                                          ##Taking sum of last field of all lines here and keep adding them to get cumulative sum of whole Input_file.
  next                                              ##next will skip all further statements from here.
}
FNR==1{                                             ##Checking condition if its first line for 2nd time reading of Input_file.
  count=sum/3                                       ##Creating count with value of sum/3 here.
}
{
  curr_sum+=$NF                                     ##Keep adding lst field sum in curr_sum here.
}
(curr_sum>=count || FNR==1) && fileCnt<=2{          ##Checking if current sum is <= count OR its first line(in 2nd time reading) AND output file count is <=2 here.
  close(out_file)                                   ##Closing output file here, may NOT be needed here since we are having only 3 files here in output.
  out_file="file" ++fileCnt                         ##Creating output file name here.
  curr_sum=$NF                                      ##Keep adding lst field sum in curr_sum here.
}
{
  print > (out_file)                                ##Printing current line into output file here.
}'   Input_file  Input_file                         ##Mentioning Input_file names here.

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