Research Intern
I find this easier to understand with a visualization. Here I’m using purple ovals for calls to node, green rectangles for calls to cons, black ovals for calls to empty and black rectangles for calls to nil:，更多细节参见新收录的资料
，这一点在新收录的资料中也有详细论述
result[i] = r[i];。新收录的资料对此有专业解读
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