Box-and-pointer structure

Suppose we evaluate the expression (list 1 (list 2 (list 3 4))) . Give the result printed by the interpreter, the corresponding box-and-pointer structure, and the interpretation of this as a tree (as in figure 2.6).

Figure 2.6: The list structure in figure 2.5 viewed as a tree.

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This exercise has no tests. Any solution is a right answer.

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