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What is pseudopolynomial time? How does it differ from polynomial time?
...ng about algorithms that operate on numbers. Let's consider the problem of testing whether a number is prime or not. Given a number n, you can test if n is prime using the following algorithm:
function isPrime(n):
for i from 2 to n - 1:
if (n mod i) = 0, return false
return true
S...
MySQL maximum memory usage
...efault 480mb to mere 100 mbs
docker run -d -p 3306:3306 -e MYSQL_DATABASE=test -e MYSQL_ROOT_PASSWORD=tooor -e MYSQL_USER=test -e MYSQL_PASSWORD=test -v /mysql:/var/lib/mysql --name mysqldb mysql --table_definition_cache=100 --performance_schema=0 --default-authentication-plugin=mysql_native_passwo...
Can an int be null in Java?
...ect can be null, like Integer. Here's a basic example to show when you can test for null:
Integer data = check(Node root);
if ( data == null ) {
// do something
} else {
// do something
}
On the other hand, if check() is declared to return int, it can never be null and the whole if-else block ...
How to check if a string contains only digits in Java [duplicate]
...Sequences
Edit: due to some confusion in other answers, I am writing a test case and will explain some more things in detail.
Firstly, if you are in doubt about the correctness of this solution (or others), please run this test case:
String regex = "\\d+";
// positive test cases, should all b...
Repository Pattern Step by Step Explanation [closed]
...usually)
It is easy to replace a repository with a fake implementation for testing - so you don't need to have a database available to your unit tests
There are other benefits too, for example, if you were using MySQL and wanted to switch to SQL Server - but I have never actually seen this in prac...
How do I create 7-Zip archives with .NET?
...ntrast, is well-documented, easy to use, and has many sample usages in its test project. Using the examples, I could quickly compress and decompress using file or memory.
– John Wigger
Dec 27 '10 at 20:43
...
How much faster is C++ than C#?
...sgame.alioth.debian.org/ with a great deal of scepticism, as these largely test arithmetic code, which is most likely not similar to your code at all.
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How can I make my match non greedy in vim?
...but specifying operators); and
you have [g]vim compiled with perl feature, test using
:ver and inspect features; if +perl is there you're good to go)
try search/replace using
:perldo s///
Example. Swap src and alt attributes in img tag:
<p class="logo"><a href="/"><img src="/ca...
Label Alignment in iOS 6 - UITextAlignment deprecated
...
(Caveat: Being a member of the aforementioned steady-earth lovers, I have tested this with an old version, but not yet with iOS6.)
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Wait until file is unlocked in .NET
...ce if you have opened the file for read access, you have it, don't have to test for it. Although with the design here you aren't forcing exclusive access so it's even possible you may be able to read the first byte, but no others (byte level locking). From the original question you are likely to o...