HackerRank ‘Uniq’ Command #4 problem solution

In this HackerRank ‘Uniq’ Command #4 problem solution we have given a text file, that display only those lines which are not followed or preceded by identical replications.

Sample Input

A00

a00

01

01

00

00

02

02

A00

03

aa

aa

aa

Sample Output

A00

a00

A00

03

Explanation

The comparison is case sensitive, so the first instance of “A00” and “a00” are considered different, hence unique.

The next instance of A00 is succeeded and preceded by different lines, so that is also included in the output.

The same holds true for 03 – it is succeeded and preceded by different lines, so that is also included in the output.

Problem solution.

uniq -u