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Why are these numbers not equal?
The following code is obviously wrong. What's the problem?
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Counting inversions in an array
I'm designing an algorithm to do the following: Given array A[1... n] , for every i < j , find all inversion pairs such that A[i] > A[j] . I'm using merge sort and copying array A to array B and then comparing the two arrays, but I'm having a difficult time seeing how I can use this to find...
How to use Class in Java?
There's a good discussion of Generics and what they really do behind the scenes over at this question , so we all know that Vector<int[]> is a vector of integer arrays, and HashTable<String, Person> is a table of whose keys are strings and values Person s.
However, what stumps me ...
Which timestamp type should I choose in a PostgreSQL database?
I would like to define a best practice for storing timestamps in my Postgres database in the context of a multi-timezone project.
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Easy interview question got harder: given numbers 1..100, find the missing number(s) given exactly k
I had an interesting job interview experience a while back. The question started really easy:
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How come an array's address is equal to its value in C?
In the following bit of code, pointer values and pointer addresses differ as expected.
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Creating dataframe from a dictionary where entries have different lengths
Say I have a dictionary with 10 key-value pairs. Each entry holds a numpy array. However, the length of the array is not the same for all of them.
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Can you autoplay HTML5 videos on the iPad?
The <video> tags autoplay="autoplay" attribute works fine in Safari.
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Create nice column output in python
I am trying to create a nice column list in python for use with commandline admin tools which I create.
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What are the benefits of learning Vim? [closed]
As a programmer I spend a lot of hours at the keyboard and I've been doing it for the last 12 years, more or less. If there's something I've never gotten used to during all this time, it's these annoying and almost unconscious constant micro-interruptions I experience while coding, due to some of th...