Thanks for the solution, but i need one more change in requirement, instead of adding the new element after "remove", i need to add the new element say after every multiples of 10 set, i.e. 10th set, 20th set,30th set and 40th set.
totally we have 20 sets right, i need to add one new element after 10th set and other one after 20th set
How it can be achieved...?
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