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Explain how finding cycle start node in cycle linked list work?
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Distance run by slow: x + y
Distance run by fast: x + m(y + z) + y i.e. extra y where they meet
Since fast runs with twice the speed of slow, and that they have been running for same time, it implies that if we double the distance ran by slow, we get the distance ran by fast. Thus,
2(x + y) =...
Displaying the Indian currency symbol on a website
...e and pastes it somewhere else, he will see Rs and not some other or blank character.
You can now also use the new Rupee unicode symbol — U+20B9 INDIAN RUPEE SIGN. It can be used in this manner:
<span class="WebRupee">&#x20B9;</span> 500
Just include the following script and it...
How is the “greater than” or “>” character used in CSS?
I have seen this character a number of times in CSS files but I have no idea how its used. Can anyone explain it to me and show how they are useful in making a page style easier?
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How do I use vim registers?
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0p would mean go to the first character of the current line and paste from the contents of the default register ("). "p would be an incomplete command since you need to specify what command to use the register p for.
– Ramon Marco L....
Naming convention for unique constraint
...imary key doesn't get a sequence number since there can be only one. The 2-char alpha suffix meanings are:
PK: Primary Key
AK: Alternate Key
FK: Foreign Key
IX: IndeX
CK: ChecK
DF: DeFault
I generally want to group metadata/system catalog data by the controlling object rather than by object type...
Forking vs. Branching in GitHub
...ith a fork.
The merge experience would be about the same, but with an extra level of indirection (push first on the fork, then ask for a pull, with the risk of evolutions on the original repo making your fast-forward merges not fast-forward anymore).
That means the correct workflow is to git pu...
Xcode 4 - “Archive” is greyed out?
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see the picture. but I have to type enough chars to post the picture.:)
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JavaScript ternary operator example with functions
...nch, you have a muti-branched if/else tree, or multiple else/ifs in a long string.
The ternary operator is common when you're assigning a value to a variable based on a simple condition or you are making multiple decisions with very brief outcomes. The example you cite actually doesn't make sense,...
Unicode equivalents for \w and \b in Java regular expressions?
...e as an embeddable (?U) for inside the pattern, so you can use it with the String class’s wrappers, too. It also sports corrected definitions for various other properties, too. It now tracks The Unicode Standard, in both RL1.2 and RL1.2a from UTS#18: Unicode Regular Expressions. This is an excit...
How does having a dynamic variable affect performance?
...method we call were trying to do something intensive, like combining a few strings together or searching a collection for a value, those operations would likely far outweigh the difference between a direct call and a dynamic call.
Performance is just one of many good reasons not to use dynamic unnec...