Stack is a type of collective data that stores data in a "first in, last
out" manner. "stack" is not a keyword, but a built-in function name. To create
an empty stack, call the stack function
s = stack();
To push an item into the stack,
s.push(x);
To pop the top item out of the stack
x = s.pop();
To check the height of the stack
s.height;
oz
2009-12-22