‘Sed’ command #5 HackerRank Solution

Hello coders, In this post, you will learn how to solve ‘Sed’ command #5 HackerRank Solution. This problem is a part of the Linux Shell series.

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‘Sed’ command #5 HackerRank Solution
‘Sed’ command #5 HackerRank Solution

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‘Sed’ command #5 HackerRank Solution

Objective

Sed is a popular utility which enables quick parsing and transformation of text.

Here are some very simple examples of sed in action.

Substitute the first occurrence of ‘editor’ with ‘tool’.

$:~/hackerrank/bash/grep/grep1$ echo “My favorite programming editor is Emacs. Another editor I like is Vim.” | sed -e s/editor/tool/
My favorite programming tool is Emacs. Another editor I like is Vim.

Substitute all the occurrences of ‘editor’ with ‘tool’.

$:~/hackerrank/bash/grep/grep1$ echo “My favorite programming editor is Emacs. Another editor I like is Vim.” | sed -e s/editor/tool/g
My favorite programming tool is Emacs. Another tool I like is Vim.

Substitute the second occurrence of ‘editor’ with ‘tool’.

$:~/hackerrank/bash/grep/grep1$ echo “My favorite programming editor is Emacs. Another editor I like is Vim.” | sed -e s/editor/tool/2
My favorite programming editor is Emacs. Another tool I like is Vim.

Highlight all the occurrences of ‘editor’ by wrapping them up in brace brackets.

$:~/hackerrank/bash/grep/grep1$ echo “My favorite programming editor is Emacs. Another editor I like is Vim.” | sed -e s/editor/{\&}/g
My favorite programming {editor} is Emacs. Another {editor} I like is Vim.

Task

Given an input file, with N credit card numbers, each in a new line, your task is to reverse the ordering of segments in each credit card number. Assume that the credit card numbers will have 4 space separated segments with 4 digits each.

If the original credit card number is 1434 5678 9101 1234, transform it to 1234 9101 5678 1434.

Input Format

N credit card numbers, each in a new line, credit card numbers will have 4 space separated segments with 4 digits each.

Constraints

1 <= N <= 20

However, the value of N does not matter while writing your command.

Output Format

N lines, each containing a credit card number with the ordering of its segments reversed.

Sample Input

1234 5678 9101 1234
2999 5178 9101 2234
9999 5628 9201 1232
8888 3678 9101 1232

Sample Output

1234 9101 5678 1234
2234 9101 5178 2999
1232 9201 5628 9999
1232 9101 3678 8888

Explanation

The order of the four segments in the (input) credit card numbers have been reversed.

‘Sed’ command #5 HackerRank Solution

sed -E 's/([0-9]{4}) ([0-9]{4}) ([0-9]{4}) ([0-9]{4})/\4 \3 \2 \1 /g' 

Note: This problem  (‘Sed’ command #5) is generated by HackerRank but the solution is provided by  chase2learn. This tutorial is only for Learning and Educational purpose.

FAQ:

Bash and Linux Shell Practice on Hacker Rank

Bash and Linux Shell Practice. Learn and practice your Linux bash and text processing skills. The contest has ended. Speed. Accuracy. Efficiency.

Is it worth solving Linux Shell challenges in HackerRank?

Of course its worth . You might get some basic knowledge of for what kind of problem what command would be best .

What shell is in Linux?

sh – This is known as the Borne Shell and is the original shell; csh, tcsh – These are well-known and widely used derivatives of the Borne shell; ksh – The popular Korn shell; and. bash – The Borne Again SHell is the most popular shell used for linux and developed by GNU.

Where can I find HackerRank solutions in Linux Shell?

in this post you will get all the solutions of HackerRank Linux Shell Problems.

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Conclusion

Finally, we are now, in the end, I just want to conclude some important message for you

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