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Fast stable sorting algorithm implementation in javascript
... mergeSort(compare) {
var length = this.length,
middle = Math.floor(length / 2);
if (!compare) {
compare = function(left, right) {
if (left < right)
return -1;
if (left == right)
return 0;
else
return 1;
};
}
...
Get the closest number out of an array
...1;
while (hi - lo > 1) {
mid = Math.floor ((lo + hi) / 2);
if (arr[mid] < num) {
lo = mid;
} else {
hi = mid;
}
}
if (...
What does axis in pandas mean?
...p of dataframe1 or vice a versa.
E.g making a pile of books on a table or floor
axis=1 means along "columns". It's a column-wise operation.
Suppose, to perform concat() operation on dataframe1 & dataframe2,
we will take out the 1st complete column(a.k.a 1st series) of dataframe1 and place i...
Why does this code using random strings print “hello world”?
...ialized with a 32-bit seed, we can expect most words of length up to
λ = floor[32/log₂(27)] - 1 = 5
to be generated by at least one seed. Even if we were to search for a 6-character word, we would still be successful about 41.06% of the time. Not too shabby.
For 7 letters we're looking at close...
What does a tilde do when it precedes an expression?
...nd dropping its decimal place by doubling it, effectively the same as Math.floor() for positive numbers).
I say unclear because it's not immediately obvious what it is being used for. Generally, you want your code to communicate clearly to other people reading it. While using ~ may look cool, it's...
Calculate business days
...al.
$days = ($endDate - $startDate) / 86400 + 1;
$no_full_weeks = floor($days / 7);
$no_remaining_days = fmod($days, 7);
//It will return 1 if it's Monday,.. ,7 for Sunday
$the_first_day_of_week = date("N", $startDate);
$the_last_day_of_week = date("N", $endDate);
//--...
How to measure time taken by a function to execute
...displayed, especially on the Windows platform where results may be rounded+floored to the nearest 15ms boundary, resulting in weird stuff such as 0ms timings on tiny code bits.
– oligofren
Mar 6 '13 at 9:59
...
Storing money in a decimal column - what precision and scale?
... it first. This will usually be round, though in special cases it could be floor or ceil. Know the difference and choose carefully.
Store the type of a number alongside the value
This may not be as important for you if you're only handling one currency, but it was important for us in handling mult...
Spring MVC: How to perform validation?
... It would happen like this but there is a simpler way... If you use JSP and a <form:form commandName="user"> submission, the data are automatically put in the @ModelAttribute("user") user in the controller method. See the doc : static.springsource.org/spring/docs/3.0.x/…
...
What is a loop invariant?
...
start = 1, end = length(A)
while ( start <= end ) {
mid = floor(start + end / 2)
if ( A[mid] == a ) return mid
if ( A[mid] > a ) end = mid - 1
if ( A[mid] < a ) start = mid + 1
}
return -1
}
So the loop conditional seems pretty straight for...