Question: 1 . Write an example code that contains a common sub - expression ( Programme - 1 ) . Rewrite the code to eliminate the

1. Write an example code that contains a common sub-expression (Programme-1). Rewrite the code to eliminate the common subexpression (Programe-2). Code both these programs in Python programming language. Run these programs on your computer/laptop and measure the execution time, and memory usage, and compare them.
2. Briefly illustrate the process of using inference rules for type checking with examples.

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