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What algorithms are used for calculating file sizes?

everyone I've just seen that the same file can register different size on different environments like one size in Ubuntu, another in One Drive, and another in Google Drive, so I'm just curious what ...
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1answer
48 views

Use ffmpeg for thumbnail selections

This is a follow-up question from HERE. I want to sample k frames out of the n number of frames in a given video using FFMpeg and its thumbnail filter. There is a post here providing some insights how ...
50
votes
1answer
5k views

What exactly is Excel's Auto Fill algorithm?

What is the algorithm used by Auto Fill in Excel? For example, when I enter the numbers 3,4,5,7,8 into a column and then use Auto Fill, I get the following result: 3 4 5 7 8 9.3 10.6 11.9 13....
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1answer
52 views

Will this program terminate for every Integer? [closed]

In a Part Test for GATE Preparation there was a question : f(n): if n is even: f(n) = n/2 else f(n) = f(f(n-1)) I answered "It will terminate for all integers", because even for negative ...
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0answers
58 views

Override El Capitan Hash Algorithm to read High Sierra DMG image?

My Mac OS was corrupted, so in recovery mode I made a backup of my data files while @High Sierra (10.13.3). Unbeknownst to me, this created a DMG file that can only be opened in High Sierra. I ...
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0answers
95 views

Value duplicates in a matrix VBA

I have this code to get the smallest number that can find and his column in each row of the matrix and write it in cells(column where it was found, row) This is the matrix at the beginning Matrix at ...
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0answers
42 views

Transfer image data on Gigabit Ethernet to remote system

I am developing an electronics which runs few image processing algorithms on the raw image bits and transfers the processed bits/ data to the remote PC. I want to implement gigabit ethernet interface ...
-3
votes
1answer
223 views

Designing a custom small DDoS detection and defense sytem [closed]

Am very new to the topic so I would like some guidance where to get started. What I want is, some tools to programmatically observe network traffic and preform some actions on the traffic. I don't ...
0
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1answer
615 views

Finding permutations of a number using bash script

Is it possible to write a bash script which takes a 4 digit number as an command line argument and produces all permutations of that number with using only pure bash?
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0answers
86 views

Implementation of qsort [closed]

I have been looking for implementation for qsort but using google I find implementation for something like this void qsort(int[] arr, int left, int right); What I want is implementation for ...
1
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0answers
29 views

Creating an specific type of meta-algorithm

I need to create a program able to create an algorithm to Matlab. For instance, in this program, I want to give it an integer n>0 and make it create a Matlab algorithm with the following code: u1 = ...
4
votes
3answers
634 views

How to achieve high-quality downscaling of diagrams (like in Firefox)?

I often need to downscale raster images consisting of thick straight lines and other thick curves, like this one: . Using GIMP 2.8.16 and its various interpolation options to resize the image to ...
1
vote
1answer
240 views

How can I find vendor name from MAC address of my NIC

So far I learned having my first 3 bytes of my MAC address(HEX format: 00:00:00:00:00:00) I can find my NIC's vendor name(which is a string). Can you elaborate this algorithm? No websites/tools links ...
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2answers
108 views

How to make an arbitrary Microsoft FILETIME?

I would like to make an arbitrary Microsoft FILETIME. The algorithm is more important than the Microsoft programming language. For example if today is June 2 2016, I would like to calculate the ...
0
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0answers
33 views

Does such a cache (unreduce) actually exist?

I'm reading about cache replacement algorithms and one states (source, page 37) Def. A reduced schedule is a schedule that only inserts an item into the cache in a step in which that item is ...

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