CS 24 Plan for Today:

Review PA3 solution, and introduce PA4

STL algorithms & iterators [more librarytools.cpp]
	Also ostreamitr.cpp

Abstraction & template classes [bag4.h, author.cxx]
	Linked list bag template [node2.h, bag5.h]

Stack ADTs: intstack of Lab06, STL’s stack<Item>

Stack applications: Compiler’s function call stack,
	Evaluating expressions [Lab06, calc.cxx]
		infix—>postfix [see Section 7.4]
	Reverse anything [e.g., reverseargs.cpp]
	Backtracking [e.g., N queens: chapt07.ppsx]

Implementing stacks [quick dirty array: intstack]
	(more Wednesday)