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Input: 67 hot sun 19 best 83 ice 49 ace 77 cut 37

Which of the following would be the Step I?

  • A.19 37 49 hot sun best ice ace cut 67 77 83
  • B.83 67 hot sun best ice 49 ace 77 cut 37 19
  • C.19 67 ace best hot sun ice 49 77 cut 37 83
  • D.19 67 hot sun best ice 49 ace 77 cut 37 83

Answer: D

Correct answer: 19 67 hot sun best ice 49 ace 77 cut 37 83

Each of the early steps moves two numbers at once: the smallest remaining to the left end and the largest remaining to the right end, with everything else keeping its order. From the input, 19 goes to the front and 83 to the back, leaving 67 hot sun best ice 49 ace 77 cut 37 untouched between them.

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