interview questions ? programming ..

Question

Hi 


Q 1) Create classes that will clearly represents fallowing constructs .
 
*Define a shape object ,where the object is any two dimensional figure , and has fallowing characteristics Name , perimeter ,surface area 

* Define circle , retaining and accurately outputting the values of the aforementioned characteristics of a shape 

*Define a triangle , this time , the name of the triangle should be taken into account if it is equilateral (3 sides equal) , isosceles (only 2 sides same) , scalene (no side is equal in lengths )

Q 2 ) Choose you are designing spell check application to be used in any editor like Word , Textpad etc . The dictionary used in the memory to ensure quick spell check by the spell check application . WHICH DATA STRUCTURE WILL YOU USE in this dictionary ?WHY justify your view .

Q 3 ) Simple one Http-get vs Http-Post ... i know this thing but they asked difference b/w
hhtp-get , post , HEAD methods . any ideAS ....

Ty for you help
Have  a nice day