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1. What are enqueue and dequeue operations? 2. Distinguish between stack and queue. 3a. Convert the infix (a+b)*(c+d)/f into postfix & prefix Expression. b. Write

1. What are enqueue and dequeue operations?
2. Distinguish between stack and queue.

3a. Convert the infix (a+b)*(c+d)/f into postfix & prefix Expression.

b. Write postfix from of the expression –A+B-C+D?

4. Define priority queue with diagram and explain the operations.

5. Explain how to evaluate arithmetic expressions using stack.

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