Iteration in Golang

I am trying to create a program which print out results bassed on the the record number? For example:

GroupNo FirstName LastName
1 A B
1 C B
2 V B
2 F B
3 K B
3 P B

So in this case, I want to compare the current record with previous record and want to print out the result bassed on the current group number

How is this question different from the one you’ve asked yesterday?

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