Re^5: sorting and merging in perl

[poj]

I'm struggling to understand the logic here. In the original post you have records

7900724677,200906871,20180101,20180228
7900724677,200906872,20180301,20180330
7900724677,200906873,20180401,20180420

creating the record

7900724677,200906871:200906873,20180101,20180420

but also you now want these records

7900724655,200906888,20180416,20180522
7900724655,200906889,20180601,20180720
7900724655,200906889,20180724,20180728
7900724655,200906888,20180730,20180830
7900724655,200906890,20180905,20180930
7900724655,200906890,20181005,20181030
7900724655,200906890,20181104,

to create 2 records

7900724655,200906889,20180601,20180728
7900724655,200906890,20180905,

Is that correct ?

poj

[Sekhar Reddy]

Thank you Poj,Yes, Your understanding is correct.

[poj]

Ok, why are the 200906888 records ignored ? Is it because the following 2 records 200906889 and 3 records 200906890 are not a sequence ?

poj