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Explain how finding cycle start node in cycle linked list work?
...des the existence of loop, but how does moving tortoise to beginning of linked list while keeping the hare at meeting place, followed by moving both one step at a time make them meet at starting point of cycle?
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Java Garbage Collection Log messages
.... For example, here is output from a large server application:
[GC 325407K->83000K(776768K), 0.2300771 secs]
[GC 325816K->83372K(776768K), 0.2454258 secs]
[Full GC 267628K->83769K(776768K), 1.8479984 secs]
Here we see two minor collections followed by one major collection. The numbe...
Reverse / invert a dictionary mapping
Given a dictionary like so:
26 Answers
26
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Indentation shortcuts in Visual Studio
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Tab and Shift+Tab will do that.
Another cool trick is holding down ALT when you select text, it will allow you to make a square selection. Starting with VS2010, you can start typing and it will replace the contents of your square selection with what you type. Absolutely a...
Query-string encoding of a Javascript Object
Do you know a fast and simple way to encode a Javascript Object into a string that I can pass via a GET Request?
40 Ans...
How does this print “hello world”?
...o group, then the 5-bits group gets isolated ANDing the number with the mask 31₁₀ = 11111₂ in the sentence l & 31
Now the code maps the 5-bit value to its corresponding 7-bit ascii character. This is the tricky part, check the binary representations for the lowercase
alphabet letters in t...
Cluster analysis in R: determine the optimal number of clusters
... in R, I'm not very sure how to choose the best number of clusters to do a k-means analysis. After plotting a subset of below data, how many clusters will be appropriate? How can I perform cluster dendro analysis?
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How to fix Array indexOf() in JavaScript for Internet Explorer browsers
If you have worked with JavaScript at any length you are aware that Internet Explorer does not implement the ECMAScript function for Array.prototype.indexOf() [including Internet Explorer 8]. It is not a huge problem, because you can extend the functionality on your page with the following code.
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Difference between break and continue statement
Can anyone tell me the difference between break and continue statements?
21 Answers
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What is memoization and how can I use it in Python?
... the remembered result rather than computing the result again. You can think of it as a cache for method results. For further details, see page 387 for the definition in Introduction To Algorithms (3e), Cormen et al.
A simple example for computing factorials using memoization in Python would be som...