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O(nlogn) Algorithm - Find three evenly spaced ones within binary string
I had this question on an Algorithms test yesterday, and I can't figure out the answer. It is driving me absolutely crazy, because it was worth about 40 points. I figure that most of the class didn't solve it correctly, because I haven't come up with a solution in the past 24 hours.
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How would you implement an LRU cache in Java?
... that I want to implement my own using just the SDK (learning by doing). Given that the cache will be used in a multithreaded environment, which datastructures would you use? I've already implemented one using LinkedHashMap and Collections#synchronizedMap , but I'm curious if any of the new concu...
LINQ .Any VS .Exists - What's the difference?
Using LINQ on collections, what is the difference between the following lines of code?
6 Answers
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FixedThreadPool vs CachedThreadPool: the lesser of two evils
I have a program that spawns threads (~5-150) which perform a bunch of tasks. Originally, I used a FixedThreadPool because this similar question suggested they were better suited for longer lived tasks and with my very limited knowledge of multithreading, I considered the average life of the thr...
What's the best way to do a backwards loop in C/C#/C++?
I need to move backwards through an array, so I have code like this:
14 Answers
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Node.js and CPU intensive requests
I've started tinkering with Node.js HTTP server and really like to write server side Javascript but something is keeping me from starting to use Node.js for my web application.
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How can I plot with 2 different y-axes?
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How to compile a 32-bit binary on a 64-bit linux machine with gcc/cmake
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how to exclude null values in array_agg like in string_agg using postgres?
...t names, I get my names separated by commas, but in case there is a null value, that null is also taken as a name in the aggregate. For example :
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How do I select elements of an array given condition?
Suppose I have a numpy array x = [5, 2, 3, 1, 4, 5] , y = ['f', 'o', 'o', 'b', 'a', 'r'] . I want to select the elements in y corresponding to elements in x that are greater than 1 and less than 5.
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