Compare every item to every other item in ArrayList

Question

I\'m having trouble with what I thought should be a pretty simple problem.

I need to compare every item in an arrayList with every other item in the the list without com

Answer 1

for (int i = 0; i < list.size(); i++) {
  for (int j = i+1; j < list.size(); j++) {
    // compare list.get(i) and list.get(j)
  }
}