[5-Marks question]
Let L = {a1, a2, ………., an} n ≥ 0 be a list whose Pascal representation is
type list = record next:↑ list; val: integer end
The following function returns a list in which a2i and a2i-1, 1 ≤ i ≤ [n/2] are interchanged. Complete the function by filling the boxes. Write the line number and the content of the box in your answer sheet.
Answer:
Explanation:
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