Sets operations

List

• empty()
• isEmpty()
• getHead()
• add()
• delete()
• position()
• belongs()
• subSet()
• union()
• intersection()
• equality()
• complement()
• difference()
• symmetricDifference()

Array

• empty()
• isEmpty()
• add()
• delete()
• position()
• belongs()
• subSet()
• union()
• intersection()
• equality()
• complement()
• difference()
• symmetricDifference()