Question: Implement a program that will use a stack structure to calculate the value of arithmetic postfix expressions. Assume that only one-digit numbers will be used.

Implement a program that will use a stack structure to calculate the value of arithmetic postfix expressions. Assume that only one-digit numbers will be used. Example: Input 12+3* should generate 9

DO NOT USE pre-made functionssuch as queue, stack, node, LinkedList . You have to make your own version

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