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Help building a variable string from a keyword - character replacements!

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Top Forums Shell Programming and Scripting Help building a variable string from a keyword - character replacements!
# 8  
Old 02-21-2019
Here is one with bash:
Code:
#!/bin/bash
word=$1
len=${#1}
KEYWORD=$(
for ((i=1; i<=len; i++))
do
  for ((j=i+1; j<=len; j++))
  do
    # the following uses sed
    # echo "$word" | sed "s/./_/$i; s/./_/$j"
    # the following uses variable modifiers
    wrd=${word:0:i-1}_${word:i}
    echo "${wrd:0:j-1}_${wrd:j}"
  done
done
)
echo "$KEYWORD"
echo "in one row:"
(
  set -f
  echo $KEYWORD
)

This User Gave Thanks to MadeInGermany For This Post:
nezabudka
# 9  
Old 02-22-2019
Code:
#!/bin/bash
sed -rn '
:3
s/\w\B/&./; T
:1
s/([.;]\w)(\B|$)/&,/; h
s/[; ]//g; s/\w\.|\w,/_/g; T2; p; g
s/,\b/;/; t1
:2
s/\./ /; s/[;,]//g; h; t3' <<<"domino"

# 10  
Old 02-22-2019
Quote:
Originally Posted by nezabudka
Code:
#!/bin/bash
sed -rn '
:3
s/\w\B/&./; T
:1
s/([.;]\w)(\B|$)/&,/; h
s/[; ]//g; s/\w\.|\w,/_/g; T2; p; g
s/,\b/;/; t1
:2
s/\./ /; s/[;,]//g; h; t3' <<<"domino"

Hello nezabudka,

Thanks a TON for providing nice solutions Smilie Request you to please do add explanation too in your post so that newcomers and OP's/members could understand it.
Moreover it completes our post too(solution + solution's details = GREAT answer Smilie )

Keep doing the GREAT work what you are doing now.

Thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
nezabudka
# 11  
Old 02-22-2019
Quote:
Originally Posted by RavinderSingh13
Hello nezabudka,

Thanks a TON for providing nice solutions Smilie Request you to please do add explanation too in your post so that newcomers and OP's/members could understand it.
Moreover it completes our post too(solution + solution's details = GREAT answer Smilie )

Keep doing the GREAT work what you are doing now.

Thanks,
R. Singh
The algorithm of the program is the following.
In the main loop by tag :3 we divide the string into letters, putting a dot in
each loop after the next letter
Code:
sed -rn ':3;s/\w\B/&./; h; s/\w\./_./p;g; s/\./,/; t3' <<<"domino"

_.omino
d,_.mino
d,o,_.ino
d,o,m,_.no
d,o,m,i,_.o

Create an internal loop to iterate a pair letter. As a secondary mark, select the semicolon
Code:
sed -rn 's/\w\B/&./; :1; s/([.;]\w)(\B|$)/&,/;h;s/\w\.|\w,/_/g;T;p;g;s/,\b/;/; t1' <<<"domino"

__mino
_o;_ino
_o;m;_no
_o;m;i;_o
_o;m;i;n;_

As a secondary mark in outer loop select the space. We build the inner loop into the outer loop.
Code:
sed -rn ':3; s/[a-z]\B/&./;T; :1; s/([.;]\w)(\B|$)/&,/;h;s/\w\.|\w,/_/g;T2;p;g;s/,\b/;/; t1;:2; s/\./ /; s/[;,]//g;h; t3' <<<"domino"

__mino
_o;_ino
_o;m;_no
_o;m;i;_o
_o;m;i;n;_
d __ino
d _m;_no
d _m;i;_o
d _m;i;n;_
d o __no
d o _i;_o
d o _i;n;_
d o m __o
d o m _n;_
d o m i __

It remains only to delete all marks and arrange the script in a readable style
Code:
#!/bin/bash
sed -rn '
:3
s/\w\B/&./; T
:1
s/([.;]\w)(\B|$)/&,/; h
s/[; ]//g; s/\w\.|\w,/_/g; T2; p; g
s/,\b/;/; t1
:2
s/\./ /; s/[;,]//g; h; t3' <<<"domino"

__mino
_o_ino
_om_no
_omi_o
_omin_
d__ino
d_m_no
d_mi_o
d_min_
do__no
do_i_o
do_in_
dom__o
dom_n_
domi__

I apologize for not being able to comment in more detail, I just can't find the right words
These 2 Users Gave Thanks to nezabudka For This Post:
RavinderSingh13 RudiC
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