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How to find the kth smallest element in the union of two sorted arrays?
...ndex1];
} else {
return A2[index2];
}
}
Now we can try a faster algorithm runs at O(log k). Similarly, compare A1[k/2] with A2[k/2]; if A1[k/2] is smaller, then all the elements from A1[0] to A1[k/2] should be in our pocket. The idea is to not just commit to one element in each loo...
Git submodule update
...commit. If only you had:
git merge develop
git submodule update --rebase
Fast-forwarded bestIdeaForBEver to b798edfdsf1191f8b140ea325685c4da19a9d437.
Submodule path 'B': rebased into 'b798ecsdf71191f8b140ea325685c4da19a9d437'
Now that best idea ever for B has been rebased onto the new commit, an...
What's the fundamental difference between MFC and ATL?
...g with a simple UI and some Office automation thrown in. It's small, it's fast, it's compile time bound saving you much time and headache. MFC has a huge library of classes that can be clunky, and difficult to work with.
Unfortunately ATL stagnated. It had wrappers for the windows API and COM su...
Why do I need an IoC container as opposed to straightforward DI code? [closed]
...nt, and another version without logging or validation that was screamingly fast for production. It is nice to be able to switch between them in one place. On the other hand, this is a fairly trivial problem easily handled in a simpler way without the complexity of IoC containers.
I believe that if ...
What is the most robust way to force a UIView to redraw?
...he compositing system. It's designed to provide high quality graphics very fast with a minimum of resource overhead. Part of that is coalescing drawing steps at the end of the run loop.
– Rob Napier
May 8 '13 at 4:25
...
Heap vs Binary Search Tree (BST)
...unordered set, because you can only check for the smallest/largest element fast.
hash map: can only be an unordered set, not an efficient sorting machine, because the hashing mixes up any ordering.
Doubly-linked list
A doubly linked list can be seen as subset of the heap where first item has grea...
What's “P=NP?”, and why is it such a famous question? [closed]
...ortest path between two points in a graph), which can be calculated pretty fast ( O(n^k), where n is the size of the input and k is a constant (in the case of graphs, it's the number of vertexes or edges)).
Other problems, like finding a path that crosses every vertex in a graph or getting the RSA ...
Is there a MySQL option/feature to track history of changes to records?
...lution to be pretty performant, using triggers as it does. Also, MyISAM is fast at inserts, which is all the triggers do. You can improve this further with smart indexing (or lack of...). Inserting a single row into a MyISAM table with a primary key shouldn't be an operation you need to optimize, r...
Performance optimization strategies of last resort [closed]
...t might make sense to wonder whether ++i or i++ or for(;;) or while(1) are faster: the kinds of questions I see so often on Stack Overflow.
P.S. It may be wondered why I didn't use a profiler. The answer is that almost every one of these "problems" was a function call site, which stack samples pin...
How do you detect where two line segments intersect? [closed]
...described in other answers by Elemental, Dan and Wodzu. It's also probably faster than the code posted by KingNestor because it's all multiplication and division, no square roots!
I guess there's some potential for divide by zero in there, though it hasn't been an issue in my case. Easy enough to mo...