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Easy interview question got harder: given numbers 1..100, find the missing number(s) given exactly k
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Here's a summary of Dimitris Andreou's link.
Remember sum of i-th powers, where i=1,2,..,k. This reduces the problem to solving the system of equations
a1 + a2 + ... + ak = b1
a12 + a22 + ... + ak2 = b2
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a1k + a2k + ... + akk = bk
Using Newton's identities, knowin...
How do I read a text file of about 2 GB? [duplicate]
I have a .txt file whose memory is more than 2 GB. The problem is I cannot open it with Notepad, Notepad++ or any other editor programs.
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Get the position of a div/span tag
Can someone show me how to get the top & left position of a div or span element when one is not specified?
6 Answer...
MSBUILD : error MSB1008: Only one project can be specified
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I know this is an old post, but I feel like I needed to share this with someone :-)
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All Ruby tests raising: undefined method `authenticate' for nil:NilClass
Most of my tests are raising the following and I don't understand why. All methods call raise the 'authenticate' error. I've checked the code if there was a method called "authenticate" but there is no such method.
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StringLength vs MaxLength attributes ASP.NET MVC with Entity Framework EF Code First
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MaxLength is used for the Entity Framework to decide how large to make a string value field when it creates the database.
From MSDN:
Specifies the maximum length of array
or string data allowed in a property.
StringLength is a data annotation that will...
Create an index on a huge MySQL production table without table locking
...le, and I fear a complete block of everything if I run a CREATE INDEX statement...
4 Answers
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time.sleep — sleeps thread or process?
In Python for *nix, does time.sleep() block the thread or the process?
7 Answers
7
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Remove Primary Key in MySQL
I have the following table schema which maps user_customers to permissions on a live MySQL database:
12 Answers
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IntelliJ not recognizing a particular file correctly, instead its stuck as a text file
...ect that is incorrectly recognized as a text file. There are many of the same type that are correct. I am aware of the "Mark as text" option. This may be the original reason this file was marked as text but I am not provided with a "mark as ftl file" option to turn it back, if indeed this is the pro...