************* create int Array objects, test, print **************
a contains:  10 20 30 40 50 
b contains:  37 47 57 
c contains:  37 47 57 
Evaluating  a == b:   not equal
Evaluating  b == c:   equal

************ create string Array objects, test, print ************
s contains:  hello world 

*********** create NodeData Array objects, test, print ***********
NodeData array called stuff contains:  5 x
 6 y
 7 z
 
NodeData array called morestuff contains:  5 x
 6 y
 7 z
 
Evaluating  stuff == morestuff:   equal
Change the value of morestuff[2] from  7 z
  to  8 w

morestuff contains:  5 x
 6 y
 8 w
 
Evaluating  stuff == morestuff:   not equal