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in Data Structures & Algorithms I by (111k points)
Assume that the operators +,-, X are left associative and ^ is right associative. The order of precedence (from highest to lowest) is ^, X, +, -. The postfix expression for the infix expression a + b X c – d ^ e ^ f is?

(a) abc X+ def ^^ –

(b) abc X+ de^f^ –

(c) ab+c Xd – e ^f^

(d) -+aXbc^ ^def

Please solve with an explanation.

1 Answer

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Best answer
Correct option is (b) abc X+ de^f^ –

Easy explanation - Given Infix Expression is a + b X c – d ^ e ^ f.

(a b c X +) (d ^ e ^ f). ‘–‘ is present in stack.

(a b c X + d e ^ f ^ -). Thus the final expression is (a b c X + d e ^ f ^ -).

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