Engineering, 17.05.2021 19:10 sophie5988

Recall that one application of a Stack is to process an arithmetic expression written in postfix notation. We can also represent arithmetic expressions as a tree. Your job is to write a function that will convert a Stack of singleton
expression nodes (where all the left and right pointers are initially set to NULL) into the correct tree structure. Note that
you do not need to actually calculate the “answer” to the arithmetic expression. Here is an example:

Recall that one application of a Stack is to process an arithmetic expression written in postfix no

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Recall that one application of a Stack is to process an arithmetic expression written in postfix not...