Does anyone here know Prolog? I'm using the SWI-Prolog interpreter.
Given this list: [[1, 2], [2, 3], [3, 4]] how do you make it say Yes if 2 (of the first list) = 2 (of second list) and 3 (of second list) = 3 (of third list)? I'm having trouble visualizing this fact as the elements in the...
Does anyone know how I would go about displaying/generating webpage content with info from an array in a .java file?
Suppose you click on cars.com, once you do, the webpage will display the contents (say car names) of an array from a .java file. How do I do this?
Thanks.
I have a question regarding about CFGs, derivations, and ambiguity.
Say you are given some CFG that produces A, B, or C
You are able to come up with two different derivations for A
To say the CFG that produces A, B, or C is ambiguous, you must find two different parse trees for some...
I have to write an XQuery that for example, "returns a list of books for a given author".
The "given author" in this case can be anything. Therefore, I was wondering what do I need to add to give the query someting, which in return, it will process it.
For example,
for $x in...
Homework Statement
F = {S -> NOPQZVWX, NX -> UV, NXT -> RY, YQ -> NXR, QZ -> S, PQ -> S}
Find the minimum closure of F.
Homework Equations
none
The Attempt at a Solution
So far I have made RHS of each FD into a single attribute and then I eliminated redundant attributes from...
Thanks, that worked, but what do you need to add if there are duplicate entires in Table 1?
ie.
Table 1
A B
1 4
1 4
2 5
3 6
Using the latest query you wrote, I get the resulting table:
Table 1
A B C
1 4 6
2 5
3 6
One of the same 1 4 entry is removed. I tried taking out the...
Thanks for the reply. I just gave that a try and it did the following:
Result
A B C
1 4
2 5
3 6
1 4 6
I'm using PSQL PostgresSQL to do this stuff. Should it be the same with your tsql code? Because I get the table above when doing your example.
I'm having trouble getting the following work. Can anyone help me?
I have two tables that look like the following:
Table 1 Table 2
A B A B C
1 4 1 4 6
2 5
3 6
How do I join both of them such...
Hi,
I am a bit confused here. Just say you're given code and it says to show the best-case analysis and the worst-case analysis. When you show the best-case, what should the answer be in? In big-O or big-omega? Similarly, if you show the worst-case, what should the answer be in? big-O or...
Does anyone here know how to prove this? I'm stuck on how to even get this started.
Let G be a connected, weighted and undirected graph where all edges have a weight of 1.
Prove that if Dijkstra's algorithm is run on this graph, G, then the tree returned is a breadth-first tree.
Can anyone help me with this question? I tried taking the derivative of u with respect to x and then summed the third derivative, but I'm getting nowhere. Any help would be great, thanks.
Let u(x1, x2, … , xn) = http://img480.imageshack.us/img480/1694/image0027hm.gif [Broken],[/URL] where a...