Dear monks
I know the issue of comparing arrays was discussed extensively but I could not find an answer to the issue below:
I have two arrays, the first is representing the content of a table at time X and the second array is the content of the same table after a period of time and some changes.
I need to think of an algorithm to compare the two arrays, find the difference, check what element moved where.
Is there a module that addresses this issue, do you have an idea?
Here is an example of the table at time A: 
1    b    Uniq
2    f    Uniq
3    c    Uniq
4    a    Uniq
5    e    Uniq
6    c    Uniq
7    a    Uniq
8    b    Uniq
9    d    Burn
10    d    Burn
11    e    Burn
12    a    Burn
13    f    Burn
14    b    Burn

And here at time B:

1    e    Uniq
2    a    Uniq
3    f    Uniq
4    c    Uniq
5    a    Uniq
6    a    Uniq
7    b    Uniq
8    e    Uniq
9    c    Uniq
10    f    Uniq
11    a    Uniq
12    b    Uniq
13    d    Burn
14    d    Burn
15    b    Burn
16    d    Burn
17    c    Burn
18    c    Burn
19    b    Burn
20    d    Burn
21    e    Burn
22    a    Burn
23    f    Burn
24    b    Burn

[download]
Regards,
Adi.

In reply to Extensive array compression by adismaug

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