Track 6 · Lesson 7 of 12

Sets: unique values and group comparisons

Remove duplicates, test membership quickly, and compare groups with union, intersection and difference.

You will be able to

• Create sets, including the empty set, and add and remove items
• Use a set to remove duplicates and to test membership quickly
• Combine and compare groups with union, intersection, difference and symmetric difference
• Return results in a predictable order by sorting a set