- AFive
- BTwo
- CFour
- DThree
Step-by-Step Solution
Step I: 1 6 2 9 5; Step II: 1 2 6 9 5; Step III: 1 2 5 6 9, which is fully sorted. So 3 steps are needed.
Answer: D) Three
A number arrangement machine rearranges a line of numbers by a fixed rule. In each step it moves the smallest number that is not yet placed to the leftmost unfixed position; the numbers already placed at the left stay fixed and the rest keep their relative order. It stops when the numbers are in ascending order. Input: 6 2 9 1 5. How many steps are needed to complete the arrangement?
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