Guidelines for writing pseudocode:

1. C/Java/Python instructions are fine. But do not write object-oriented additions. Do not declare or use any class. Declare only procedures (if necessary) and explain in words what each procedure does, and what is the use of each parameter.

2. One instruction per line

3. Match the brackets with a horizontal line

4. Number your lines

5. Write down if your array is indexed 0...n1 or 1...n.

6. If you decide to use procedures/functions/methods from the class (such as, say, DELETE- MAX(S) for S a max-heap), explain clearly what they do and in what running time. Explain the data structures, if any.

Question: Augment the stack data structure to do in constant time, besides push/insert and pop/remove, findmin. Describe the data structure, and present pseudocode for push/insert, pop/remove, and findmin. Argue that each operation takes constant time. Argue that findmin correctly returns the element with minimum key.