HackerRank ‘Uniq’ Command #4 problem solution YASH PAL, 31 July 2024 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 coding problems linux shell