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I am struggling so answer the following question. I think the reason I am not doing it correctly is because i starts at 0 rather than 1, but I am not sure how to do it.
The sum is equivalent to 3(n+1) + sum_{i=1}^n 2i, which is 3(n+1) + 2*n*(n+1)/2 = 3(n+1) + n(n+1) = (n+3)(n+1).
The result is thus (n+3)(n+1). The whole derivation is here.
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How to do 50% of 120 in scala code..need proper syntax ,& runnable code for same.
Eg :
int k = (int)(120*(50.0f/100.0f));
This is in java need scala code for same.
The answer would be:
(120*(50.0f/100.0f)).toInt
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2019-10-24T00:00:00.181Z
What is meant by the 181Z here? I have seen Z stands for Zulu time. But what is with the other three digits "181" here?
So is this an ISO8601 formatted time?
The 181 are the milliseconds. For example, JavaScript's Date.prototype.toISOString() method returns an ISO date string in this format.
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I have a matrix that is 300x50 big filled with integers. I want to find what number appears the most in that 300x50 matrix and have it returned as an integer.
Just use mode on the linearized matrix:
mode(matrix(:))
Example:
>> matrix = [3 2 3; 2 2 1]
matrix =
3 2 3
2 2 1
>> mode(matrix(:))
ans =
2
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Ｉ download wwdc10samplecode.dmg,but i can't find "breadcrumbs" about Example of Session 311 .
how I to do ?
Its right here
https://developer.apple.com/videos/wwdc/2010/
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I am testing/searching tests for my image manipulation algorithm and I have come across to "lena.png" multiple times. Why? Is it some kind of standard algorithm testing picture? I would like to know the history behind the picture.
Is there other similars pictures I could use? Why?