Question: For Java Evaluate the following postfix expressions. a. 1 2 + 3 - 2 1 + 3 * * b. 1 2 3 + *

For Java

Evaluate the following postfix expressions.

a. 1 2 + 3 - 2 1 + 3 * *

b. 1 2 3 + * 3 2 1 - + *

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