Iteration in Golang

[Yo_94 (Hamxa)]

Hi,
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

[lutzhorn]

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

Compare current row's data with the previous row?

Hello, How can I create a function which reads the data from the file and compare the current row with the previous row to check if the data has changed or not? if the data in the current row is same as the previous one then save that data with ID-1 but if the next record is different than the previous record then save a new record with ID-2?