- A4
- B6
- C5
- D3
Step-by-Step Solution
Step 3 gives 10 20 30 50 40 and Step 4 gives 10 20 30 40 50; once four numbers are placed the fifth is automatically in position, so 4 steps are needed.
Answer: A) 4
A machine arranges numbers in ascending order from the left; each step moves the smallest not-yet-arranged number to the front of the unarranged part, and it stops when no number needs to move. Example: Input: 50 40 30 20 10; Step 1: 10 50 40 30 20; Step 2: 10 20 50 40 30. How many steps in total are needed to complete the full arrangement?
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