initial commit
finish numstack opstack strstack with their testers
finish numstack opstack strstack with their testers
Calculator, RevPolishCalc, StandardCalc with their testers
Add top() in OpStack
finish MCV framework for calculator and modify StandardCalc.java
finish all javadocs
package fix
modified unit tester
javadoc and uml class diagram added
class diagram svg added
remove .class
checkstyle added and EmptyStackException modified
finish check expression in infix notation
fix bug! empty stack before calculation.
rewrite some javadoc comments and fix some bugs.
push to github
Merge branch 'master' of github.com:fated/calculator