1.2

练习 1.2:请将下面表达式变换为前缀形式:

5+4+(2(3(6+4/5)))3(62)(27) \frac{5 + 4 + (2 - (3 - (6 + 4/5)))}{3(6 - 2)(2 - 7)}

(/ 
    (+ 5 4 (- 2 (- 3 (+ 6 (/ 4 5)))))
    (* 3 (- 6 2) (- 2 7))
)

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