IKMC 2027 - Grades 3-4 - Self-study SET 2 - Thematic Batch 3 Question 18

Five cards on a table are in the order 5, 1, 4, 3, 2. Alex wants to put them in the order 1, 2, 3, 4, 5. In one move, Alex may swap any pair of cards. What is the smallest number of moves needed?