Difficulty: Medium
Correct Answer: OCNTNIUOSU
Explanation:
Introduction / Context:
This question checks careful tracking of positional swaps. The example "DEMOCRATIC" -> "EDMORCATCI" shows specific pairs are exchanged while others stay fixed.
Given Data / Assumptions:
Concept / Approach:
Index letters 1 through 10, perform the indicated swaps, then read the result left to right.
Step-by-Step Solution:
Original (index): 1 C, 2 O, 3 N, 4 T, 5 I, 6 N, 7 U, 8 O, 9 U, 10 S.Swap 1↔2: O C ...Swap 5↔6: positions 5 I and 6 N become N I.Swap 9↔10: positions 9 U and 10 S become S U.Keep others (3 N, 4 T, 7 U, 8 O) unchanged.Final string: O C N T N I U O S U -> "OCNTNIUOSU".
Verification / Alternative check:
Applying the same swap schedule back will return the original, as swaps are involutive.
Why Other Options Are Wrong:
Common Pitfalls:
Mistiming swaps or performing additional swaps; writing after each swap step helps avoid mistakes.
Final Answer:
OCNTNIUOSU
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