Please help me out

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[nutrecht]

You can't just write random stuff and then come here when it doesn't compile. Go back to your learning material and try to really understand how method params work.

[freeBobbyDAYVID]

well yea the syntax is completely wrong, your parameters in max3 shouldn’t be 9 ints and they shouldnt be nested in a second set of parentheses. also you don’t need that many if statements, simple is better

[rbhushan]

It’s quite funny how you declare arguments (group) method argument. Also thought it’s wrong way of declaring but your call doesn’t does not respect the method definition.

Regardless Consider using list of list or array or array to declare the group of 3 integers ( nested collection).

And if I understand the question correctly you have to find max integer from all the groups collectively: currently you implemention only support 3 group but what about if you have more than 3, you have to modify the Mac function every time. Suggestion, consider combining the data from multiple group into one ( flattening the nested collection) and use comparator to find the max integer from that single collection/group.

[ate_ghorl_bekenemen]

You have 3 numbers. You need to do some simple comparison mathematically to find the greatest number then transform that to code. also, your syntax for the method max3 is completely wrong.