SQL & PL/SQL :: Apply Divide And Conquer Approach On Field Value

I want to apply divide and conquer approach on the field value, For example I have the field value like this

Value
32,36,12,65,85,9663
43,36,89,65,112,9663
36,63,12,65,95,123
32,36,12,85, 85,9663

Remember that these value are taken from ONLY one field i.e Value. Apply the divide and conquer approach in such a manner that take the value of a single field and each row and divide the value into two half. Continue this process until single value until we reach the single value or single sub problems.

Apply the divide and conquer approach on all the value of field. When we get final value then match the value of two different rows. And check how much field value are similar (match or duplicated). If field values are match more then 80% then delete the duplicated value and keep the original entity.