Rating: 4.0 out of 5
Votes: 143
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Numbers are exceptions (separated by commas!) *These numbers will not be used to generate the result. Generate options at a time (1-20) |
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The program is an online random number generator for Russian lotteries 5 out of 36, 6 out of 45, 7 out of 49, 6 out of 49. In addition to the number generator, such a useful tool as "Number Exclusions" is attached.
Are you unlucky with the number 7 or 10? Then you can simply add these numbers to the exceptions, and they will not be taken into account when generating numerical options.
Main features of the program
- Convenient, simple and visual interface.
- Customizable number generator: exclusion field, the number of generated combinations is configurable from 1 to 20.
- Does not require installation. It will work on any device that has access to the Internet.
- Correct work with all popular browsers: Internrt Explorer, Opera, Google Chrome and Mozilla Firefox.
System requirements
Any browser that supports HTML5
Any bugs found, suggestions for improving the program, please report in the comments. If you like this number generator, please share a link to it on social networks or online forums.
We wish you good luck and good lottery winnings! We hope this program will help you with this.
Additional Information
License: For free
Software developer: Soft-Archive
Supported OS: Windows XP, Windows Vista, Windows 7, Windows 8
Interface language: Russian
Update date: 2019-02-12
Comments and reviews: 35
1. Sergius 01.06.2014
Of course, I understand that gamers are superstitious people, but I’m just wondering, what’s the difference, will I come up with these numbers myself, or will this numerical generator give them to me?
2. Max 04.06.2014
Sergius, of course, you yourself can come up with numbers. But when compiling them, you will still be subject to a certain sequence that will be influenced by factors such as favorite numbers, or just a number spinning in your head. That is, the numbers you come up with will be conditionally random.
The computer program is completely free from third-party interference and generates truly random numbers.
3. Iloinor 17.06.2014
When drawing in the same lottery, 5 out of 36 balls from the lottery drum fly out randomly. And their combination can be absolutely any. So it is simply impossible to generate a more or less successful combination. Any combination of numbers will always have the same winning ratio.
Who thinks otherwise?
4. Alexander 08.07.2014
Absolutely any hand-generated or compiled by the player himself has a probability of 1 in 376,992 (for the lottery 5-36). In theory, it has such a possibility! Those who think long enough on the problem of “how to increase the probability” will not agree with me.
And I came to the conclusion that it’s not so hopeless in fact. If you look at how the combinations play in the full array of the same 5 out of 36, then you can see that the combinations play with equal probability over a sufficiently long period of time.
At the same time, as if clusters are observed (we looked at the starry sky), there is also a random distribution. We see that the stars are clustered in certain places, but if you look through a telescope, then the equiprobable distribution is preserved.
Yes, let's get back to the lotteries, if you look at such a card (played combinations), you can see that some areas “seem to have quieted down”, such narrow ranges become more likely than others for the next games. Since, according to the law of equiprobable distribution, this area should be filled in the very near future. It makes sense to wait for combinations there. Our probability increases dramatically. We have a strategy that is aimed at the railway pot. This is a purposeful game, not blind throwing.
This is where special programs come in handy.
Contact the author of the random number generator posted here. It can offer a special visualized game program + built-in strategy.
6. Pashka 02.01.2015
"I certainly understand that gamers are superstitious people"
Not that word. My uncle always rubs all the purchased Russian Lotto tickets on the sleeve of his happy old jacket.
7. Samurai 06.01.2015
Want to win a Million in Lotto!? Do you want to know the secret of winning and the strategy for choosing the right numbers? You will find all the secrets of how to win in the loto on the site *moderator* loto.html
Play and win.
9. Nicholas 25.10.2015
Chance and luck speak. Of course, who argues.
Did you imagine the number of combinations, for example, in the lottery 6 out of 45?
If you clearly and clearly imagine this number, it will become obvious that it is not advisable to rely only on chance and luck.
Turn on just a little fantasy, I hope you are not going to argue that we can turn on natural cunning and just accidentally exclude one single number from 45.
At the same time, you need to try very hard not to catch the prize money. The chance of such an event will be 1 in 7.5.
Now we consider that we successfully excluded this number, in this case we have not 8,145,060 combinations left for the game, but 7,059,052 ... that is, we reduced 1,086,008 from the range of possible combinations (more than a million combinations) with one single number.
This simple example illustrates the meaning of exceptions. And one should not think that people who have devoted considerable time to studying the methods of playing in numerical lotteries write one “vomit”.
Everything is mathematically justified.
Of course, Luck plays an important role in numerical lotteries, since we bet a very small number of combinations for the game.
Therefore, in order to make it easier for “Luck” to find you, you need to use some game methods that are designed to PROBABLY cut as many combinations as possible from the full array of the selected lottery.
10. Igor CK 03.09.2016
Here Nikolai wrote above about the exclusion of one number in order to increase the chances that the rest of the numbers will fall out. In theory, this is all true! If, say, we exclude not 1, but 3 numbers, then the chances will grow even higher.
BUT there is one BUT! This is a lottery, everything is random and unpredictable. One and the same number can fall out 10 times in a row, and the other one cannot fall out even in 100 variants! It is impossible to calculate these very numbers, that's the point.
I remember at the time of studying at the university, our teacher in higher mathematics, a pleasant and intelligent man, talked about lotteries and accidents. So he said that it is impossible to draw up any systems and methods here in principle! The result is completely random and unpredictable.
I saw several paid programs and training methods on the net that “help” make the right combinations of numbers that increase the chances of winning. Do you know what I'm curious about? If there is a way to increase the chances of winning, then why don't those who sell them make money on lotteries? Yes, it will not work to cut down the jackpot, the probability is too small, but it is quite possible to win small amounts. Isn't it logical?
Of course, they can object to me - they say, one does not interfere with the other - to earn money on lotteries and on the sale of techniques. But the fact is that if everyone uses these techniques, provided, of course, that they really work, then this will reduce the income from winnings for their creators, since they will have to be divided among a large number of people.
It's like finding a hole in the Webmoney system that allows you to replenish your wallet with money "out of nowhere" and put this technique up for sale so that it would be covered as soon as possible.
11. home 04.09.2016
Igor CK, what Nikolai wrote there - he wrote about one number, and the chances of not hitting the prize.
Count further, what will be the chances, if the 2nd number is excluded, not to catch the future prize money, and so on))
Naturally, they cannot be excluded indefinitely, there are no fantasy and fairy tales in lotteries, unless on fabulous sites that catch "seekers"))
Here we need a different approach, we need to follow not the numbers, but the periods that these numbers form.
Well, then build a strategy, and become attached to the history of circulation.
I decided to make a version of the generator for the mass user, and I will upload it for moderation today tomorrow.
On my website, I will open the page of this generator, and there I will try to set out a game strategy that uses the frequency of full and partial matches.
Winning the number lottery is difficult, but it is possible.
12. home 13.11.2016
In general, I wrote the basics on the site, which can be found on request: "VISUAL GENERATOR - random number generator with an exception." I paid a lot of attention to probabilities.
I made a version for this game strategy, which can be downloaded on the site, or here - VISUAL LOTTO TESTER 3.1
13. Timofei 26.11.2016
My friend at work won 63 thousand rubles in the lottery. Walks happy as a boa constrictor. And I have no luck at all. If you are lucky to win something, then one small thing.
14. Max 26.11.2016
The guys have a wonderful program "Eurolotto Win Generator All Lotteries of the World" - there are algorithms for calculating circulations, the game won 15,000 rubles and completely recouped the cost and also earned!
15. Yuri 01.02.2017
Let's try to play and see what happens.
16. Alexander 04.06.2017
Not so long ago I read in a live journal (I don’t remember the exact address of the diary) analytical calculations about lotteries in Russia. The bottom line is that the results of large winnings are manipulated and those who play are shown already known combinations. In general, the jackpot does not threaten us with you.
The information is based on the calculation of the chances of winning, the number of participants in the drawing and the number of winnings. So if you take the number of participants and calculate the chance of winning the jackpot, then you get a huge gap between chance and reality.
If, for example, you take a random number generator and guess any number from 1 to 10, then you have a 1 to 10 chance of guessing. In Russian lotteries, with the same scheme, the chance of a big win is 1 to 40-50. And it remains to be seen how real the person who wins the jackpot is.
17. home 04.06.2017
Complete nonsense is spread by pseudo-analytical mathematicians.
It can be assumed with a high degree of probability that this is a struggle between competitors (ticket distributors).
As well as people who have already finished playing before, and have read that they really think: how is it - I think, I think, and I think again ... and sawing, I can’t count in any way.)
That is, they blame third-party forces for their failures, which do not allow to calculate in any way, well, no matter how.
Do you know where you can calculate something up to fractions of a second? For example, in celestial mechanics - an eclipse of the moon - for millennia ahead - based on past observations.
This, as we all know, was used by priests who learned to predict such events.
In lotteries, alas, there are no even intervals, for example, the fall of a certain ball. Since we have an accident, and not a clear celestial mechanics.
That is, if the chance of the number is 1 to 10, then it will play at random - somewhere, going into a deep pause, somewhere it will often, BUT if we take a large number of tests, then on average the number will fall out 10 times per draw.
Probability levels out.
I read calculations about jackpots.
Calculators took a fixed segment of the circulation history - they looked at how many jackpots they took - they looked at how many bets they bought.
Simple division - and here the result does not converge. That is, for example, in the lottery, 5 out of 36 jackpots must be played for every 376,992 bets)
It turned out, for example, played 10, but should be like 20)
They take a different segment of the circulation history, and repeat the calculation - and lo and behold, there is even more than calculated - it means it was honest there - and even the orgies gave more - like lure.
Let's remember about a single number - paint on a time period (on a sheet of paper), the history of the coincidence of a number, for example 33, for 150 runs.
Now divide this segment into, say, 3 equal parts. Count the number of matches in each part. You will see that there will be a different number of matches.
But on average for the entire segment, the probability will be close to the calculated one.
150 copies is clearly not enough.
Now, none of the calculators will agree to calculate, say, for 3000 runs in 5 out of 36. This is titanic manual labor (you need to look at the site for the number of purchased bets and fix jackpots).
I am convinced that on average, for such a number of circulations, the probability will be about the calculated one.
18. Cossack 03.07.2017
I’m wondering how Stoloto differs from Casinos banned in the Russian Federation? Essentially the same bets on the number. Oh yes, just a different name))) Well, okay, God bless him with the name. Here in the reviews they are hotly discussing the possibilities and chances of winning the lottery, they even made a combination generator. But where are these real people who win Jack Pots and big wins? I recommend watching a few videos on YouTube about organizing Stoloto lotteries, a random number generator (RNG), the so-called live broadcasts, etc.
Answer:
People always want to win a lot of money for free. Any tote is built on this. To play or not, to believe or not, everyone's business. Link to video regarding Stoloto
19.lion 09.07.2017
It's been about a year since I got hooked on the lottery. I understand intellectually that I have almost no chance of winning the jackpot, but I just can’t tear myself away from the game.
20.Jobbs 12.07.2017
How to calculate the probability of getting one number out of 100
Answer:
The meaning of the question is not entirely clear. If we take a completely random, random loss, then the answer is quite obvious, the chances will be 1 in 100 for any number from 1 to 100.
If you are talking about random number generator (RNG) algorithms, does any programming language have its own operator responsible for generating them? It is difficult to say how random it is, because some algorithm is still responsible for its work, which in itself excludes complete randomness. However, the end result is close to perfect.
21. Kirill 05.09.2017
Do not believe in the possibility of winning significant money in the lottery. All the money has long been cut down. Search the web for information about the owner of Stoloto and how much money is spinning there. In addition, all broadcasts are recorded. You can return any result. Jack pots get dead souls.
22. Nicholas 23.10.2017
What are you talking about! At the expense of the network, for example, you can find information on the network that the Earth is flat, and it turns out that everyone is deceived that it is a ball ... and a lot more can be found!
Have you ever seen the odds of winning? Can you imagine what it is all about? In lotteries, there is no need to "squeal", since the probabilities will not allow the lottery to go bankrupt, the organizers will always be in profit.
And so that there were no doubts, or that they were minimal, the Russian state lotteries were transferred to automatic lottery drums, which no one approaches during the draws. Lototrons are installed behind glass in the lottery center. Now those who wish can see with their own eyes the work of these lottery drums - admission is free. By the way, there is no such openness anywhere else in the world.
news on the website stoloto.ru - the official website of Russian lotteries
23. lucky dude 26.10.2017
Bullshit, bullshit and more bullshit. Lady luck and nothing more. Try to take the combination given to you and beat it in the archive lottery and see the matches that were in previous draws. Although who knows, maybe someone else will get the same bet taken from here. For everything by chance
24. Andrey 27.10.2017
A good combination generator for stoloto STALKER LOTTO - 5x36, 6x45, 7x49, 6x49
The author on the program page gave links to the lottery forum, where he made tests.
25. Semem Semenych 20.12.2017
>>> It is unlikely that you will find the authors of lottery programs who will publicly conduct tests, and even on lottery forums where the players are not stupid at all, who have gone through hundreds of free and paid programs.
I would say otherwise. It is unlikely that you will find avid lottery gamers with high intelligence. Of course, they can buy 1-2-3 tickets for fun, but people are well aware that it is simply unrealistic to win serious money in the lottery, especially in Russia.
26. Pavel 27.12.2017
High IQ players don't play multiple tickets - not even for fun. Such players understand the theory of probability very well, which for most ordinary people is a Chinese letter. Such players play systematically, carefully calculating their chances and budget for the game. These players develop strategies for the game. Such players never bet at random.
As for winning big prizes in Russia, this is just your attitude, so to speak, not supported by any facts. Learn more about probability theory. It is highly unlikely that your neighbor will hit the jackpot and then share this information with you. I will say differently - in Russia it is dangerous to shine with a big win)))
27. don't play 05.01.2018
Pavel, people with high intelligence are well aware of what is a scam and what is not. And yes, intelligence allows them to make money with a much greater degree of probability than a lottery.
28. Alexander 16.01.2018
You can’t win in the table, there is a program for sold tickets
29. Mechanic 09.06.2018
Don’t fool your heads, just take a screenshot of the lottery from the site and check after the drawing there is a win, but they are cheap, I checked thousands of updates, I was tortured
30. matchball 24.06.2018
I offer free and paid programs for lottery analysis: Keno, matchball, 5/36, 6/45, 6/49, 7/49, Russian lotto and others. There is a built-in generator of combinations of given numbers, a win and jackpot generator, the ability to print lotto cards and much more. Download here [removed]
31. Ilya Nefedov 13.08.2018
Guys, no one will make you a gosloto win generator 5 out of 36, etc. even taking into account past draws. Everything is clear about the chance of random numbers falling out. BUT! Only if they are truly random. And when the winning combinations are generated by a computer that already knows which combinations the players have chosen, then I don’t believe in the honesty of its algorithms. It's the same as playing in an online casino, where the roulette generator already knows what bet you've made.
32. Albert 08.11.2018
the program does not work at all, those numbers that are not needed are scored. raw in one word
Answer:
I introduced several different sets of exception numbers, ran it several dozen times in different modes. The indicated numbers never appeared in the result. Do you have it differently? Or did I misunderstand you?
33. Albert 11.11.2018
how many digits can be hammered into exceptions? I scored 30 there were replays from elimination
Answer:
There are no restrictions. Do you separate the numbers with a comma?
I add the following line to the exceptions:
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30
Result: There are no excluded digits in the final result.
If your situation is different, please indicate your sequence and also your browser so that you can accurately recreate your situation.
34. Albert 14.11.2018
browser Opera.there are repetitions of those numbers that are typed in the exception
1.2.3.4.5.6.8.10.11.13.14.15.16.17.18.19.20.22.24.26.28.29.30.31.32.34.36.37.38.39.40.41.43.46.47.49.
Answer:
Your numbers are separated by a dot, not a comma. It should be like this:
1,2,3,4,5,6,8,10,11,13,14,15,16,17,18,19,20,22,24,26,28,29,30,31,32,34,36,37,38,39,40,41,43,46,47,49
This combination works.
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Number generator online in 1 click
The random number generator, which is presented on our website, is very convenient. For example, it can be used in drawings and lotteries to determine the winner. Winners are determined in this way: the program gives out one or more numbers in any range you specify. The manipulation of the results can be immediately eliminated. And thanks to this, the winner is determined in a fair choice.
Sometimes you need to get a certain number of random numbers at once. For example, you want to fill out a “4 out of 35” lottery ticket, trusting in chance. You can check: if you toss a coin 32 times, what is the probability that 10 reverses will fall out in a row (heads / tails may well be assigned by the numbers 0 and 1)?
Random number online video instruction - randomizer
Our number generator is very easy to use. It does not require downloading a program to a computer - it can be used online. To get the number you need, you need to set the range of random numbers, the number and, if desired, the number separator and exclude repetitions.
To generate random numbers in a specific frequency range:
- Choose a range;
- Specify the number of random numbers;
- The "Number separator" function serves for the beauty and convenience of their display;
- If necessary, enable / disable repetitions with a checkmark;
- Click the "Generate" button.
As a result, you will receive random numbers in a given range. The result of the number generator can be copied or sent to e-mail. It would be best to take a screenshot or video of this generation process. Our randomizer will solve any of your problems!
We have a sequence of numbers, consisting of almost independent elements that obey a given distribution. Usually evenly distributed.
You can generate random numbers in Excel in different ways and ways. Let's take a look at the best of them.
Random Number Function in Excel
- The RAND function returns a random uniformly distributed real number. It will be less than 1, greater than or equal to 0.
- The RANDBETWEEN function returns a random integer.
Let's look at their use with examples.
Selecting random numbers with RAND
This function does not require any arguments (RAND()).
To generate a random real number between 1 and 5, for example, use the following formula: =RAND()*(5-1)+1.
The returned random number is evenly distributed over the interval .
Each time the worksheet is calculated, or the value in any cell in the worksheet changes, a new random number is returned. If you want to save the generated population, you can replace the formula with its value.
- We click on a cell with a random number.
- Highlight the formula in the formula bar.
- Press F9. AND ENTER.
Let's check the uniformity of the distribution of random numbers from the first sample using the distribution histogram.
The range of vertical values is frequency. Horizontal - "pockets".
RANDBETWEEN function
The syntax of the RANDBETWEEN function is (lower bound; upper bound). The first argument must be less than the second. Otherwise, the function will throw an error. The bounds are assumed to be integers. The formula discards the fractional part.
An example of using the function:
Random numbers with 0.1 and 0.01 precision:
How to make a random number generator in Excel
Let's make a random number generator with the generation of a value from a certain range. We use a formula like: =INDEX(A1:A10;INTEGER(RAND()*10)+1).
Let's make a random number generator in the range from 0 to 100 with a step of 10.
From the list of text values, you need to select 2 random ones. Using the RAND function, we compare text values in the range A1:A7 with random numbers.
Let's use the INDEX function to select two random text values from the original list.
To select one random value from the list, apply the following formula: =INDEX(A1:A7,RANDBETWEEN(1,COUNT(A1:A7))).
Normal Distribution Random Number Generator
The functions RAND and RANDBETWEEN produce random numbers with a single distribution. Any value with the same probability can fall into the lower limit of the requested range and into the upper one. It turns out a huge spread from the target value.
Normal distribution means that most of the generated numbers are close to the target. Let's correct the RANDBETWEEN formula and create a data array with a normal distribution.
The cost of goods X is 100 rubles. The entire batch produced is subject to a normal distribution. The random variable also follows a normal probability distribution.
Under such conditions, the average value of the range is 100 rubles. Let's generate an array and build a graph with a normal distribution with a standard deviation of 1.5 rubles.
We use the function: =NORMINV(RAND();100;1.5).
Excel calculated which values are in the range of probabilities. Since the probability of producing a product with a cost of 100 rubles is maximum, the formula shows values close to 100 more often than the rest.
Let's move on to plotting. First you need to create a table with categories. To do this, we divide the array into periods:
Based on the data obtained, we can form a diagram with a normal distribution. The value axis is the number of variables in the interval, the category axis is the periods.
- tutorial
Have you ever wondered how Math.random() works? What is a random number and how is it obtained? And imagine a question at an interview - write your random number generator in a couple of lines of code. And so, what is it, an accident and is it possible to predict it?
I am very fascinated by various IT puzzles and puzzles, and the random number generator is one of such puzzles. Usually in my telegram channel I sort out all sorts of puzzles and various tasks from interviews. The problem about the random number generator has gained great popularity and I wanted to perpetuate it in the depths of one of the authoritative sources of information - that is, here on Habré.
This material will be useful to all those front-end developers and Node.js developers who are at the forefront of technology and want to get into the blockchain project / startup, where even front-end developers are asked questions about security and cryptography, at least at a basic level.
Pseudo random number generator and random number generator
In order to get something random, we need a source of entropy, a source of some kind of chaos from which we will use to generate randomness.This source is used to accumulate entropy and then obtain from it the initial value (initial value, seed), which is necessary for random number generators (RNG) to generate random numbers.
The Pseudo-Random Number Generator uses a single seed value, hence its pseudo-randomness, while the Random Number Generator always generates a random number, starting with a high-quality random value that is taken from various sources of entropy.
Entropy - is a measure of disorder. Information entropy is a measure of the uncertainty or unpredictability of information.It turns out that in order to create a pseudo-random sequence, we need an algorithm that will generate some sequence based on a certain formula. But such a sequence can be predicted. However, let's imagine how we could write our own random number generator if we didn't have Math.random()
PRNG has some algorithm that can be reproduced.
RNG - is getting numbers completely from any noise, the ability to calculate which tends to zero. At the same time, the RNG has certain algorithms for leveling the distribution.
Coming up with our own PRNG algorithm
Pseudo-random number generator (PRNG) is an algorithm that generates a sequence of numbers whose elements are almost independent of each other and obey a given distribution (usually uniform).We can take a sequence of some numbers and take the modulus of the number from them. The simplest example that comes to mind. We need to think about what sequence to take and the module from what. If just directly from 0 to N and module 2, then you get a generator of 1 and 0:
Function* rand() ( const n = 100; const mod = 2; let i = 0; while (true) ( yield i % mod; if (i++ > n) i = 0; ) ) let i = 0; for (let x of rand()) ( if (i++ > 100) break; console.log(x); )
This function generates for us the sequence 01010101010101 ... and it cannot even be called pseudo-random. For a generator to be random, it must pass the test for the next bit. But we do not have such a task. Nevertheless, even without any tests, we can predict the next sequence, which means that such an algorithm is not suitable in the forehead, but we are in the right direction.
But what if we take some well-known, but non-linear sequence, for example, the number PI. And as a value for the module, we will take not 2, but something else. You can even think about the changing value of the module. The sequence of digits in Pi is considered random. The generator can work using pi starting from some unknown point. An example of such an algorithm, with a PI-based sequence and modulo change:
Const vector = [...Math.PI.toFixed(48).replace(".","")]; function* rand() ( for (let i=3; i<1000; i++) {
if (i >99) i = 2; for (let n=0; n
We got a number generator from 0 to 9, but the distribution is very uneven and it will generate the same sequence every time.
We can take not the number Pi, but the time in numerical representation and consider this number as a sequence of digits, and in order to prevent the sequence from repeating each time, we will read it from the end. In total, our algorithm for our PRNG will look like this:
Function* rand() ( let newNumVector = () => [...(+new Date)+""].reverse(); let vector = newNumVector(); let i=2; while (true) ( if ( i++ > 99) i = 2; let n=-1; while (++n< vector.length) yield (vector[n] % i);
vector = newNumVector();
}
}
// TEST:
let i = 0;
for (let x of rand()) {
if (i++ >100) break; console.log(x) )
Now it looks like a pseudo-random number generator. And the same Math.random() - is a PRNG, we'll talk about it a little later. Moreover, each time the first number is different.
Actually, on these simple examples, you can understand how more complex random number generators work. And there are even ready-made algorithms. For example, let's take a look at one of them - this is the Linear Congruent PRNG (LCPRNG).
Linear congruent PRNG
Linear Congruential PRNG (LCPRNG) - is a common method for generating pseudo-random numbers. It does not have cryptographic strength. This method consists in calculating the terms of a linear recurrent sequence modulo some natural number m given by a formula. The resulting sequence depends on the choice of the starting number - i.e. seed. For different seed values, different sequences of random numbers are obtained. An example of the implementation of such an algorithm in JavaScript:Const a = 45; const c = 21; const m = 67; varseed = 2; const rand = () => seed = (a * seed + c) % m; for(let i=0; i<30; i++)
console.log(rand())
Many programming languages use LCPRNG (but not just such an algorithm (!).
As mentioned above, such a sequence can be predicted. So why do we need PRNG? If we talk about security, then PRNG is a problem. If we talk about other tasks, then these properties - can play a plus. For example, for various special effects and graphics animations, you may need to call random frequently. And here the distribution of values and performance are important! Security algorithms cannot boast of speed.
Another property - reproducibility. Some implementations allow you to specify a seed, which is very useful if a sequence is to be repeated. Reproduction is necessary in tests, for example. And there are many other things that do not require a secure RNG.
How Math.random() works
The Math.random() method returns a pseudo-random floating point number from the range = crypto.getRandomValues(new Uint8Array(1)); console log(rvalue)
But, unlike PRNG Math.random(), this method is very resource intensive. The fact is that this generator uses system calls in the OS to access entropy sources (poppy address, cpu, temperature, etc ...).Various lotteries, drawings, etc. are often held in many groups or publics on social networks, Instagram, etc., and are used by account owners to attract a new audience to the community.
The result of such draws often depends on the luck of the user, since the recipient of the prize is determined randomly.
For such a determination, draw organizers almost always use an online random number generator or a pre-installed one that is distributed free of charge.
Choice
Quite often, it can be difficult to choose such a generator, since their functionality is quite different - for some it is significantly limited, for others it is quite wide.
A fairly large number of such services are being implemented, but the difficulty is that they differ in scope.
Many, for example, are tied with their functionality to a particular social network (for example, many generator applications on VKontakte work only with links of this social network).
The simplest generators simply generate a random number within a given range.
This is convenient because it does not associate the result with a specific post, which means that they can be used for draws outside the social network and in various other situations.
They don't really have any other use.
<Рис. 1 Генератор>
Advice! When choosing the most suitable generator, it is important to consider the purpose for which it will be used.
Specifications
For the fastest process of choosing the optimal online random number generation service, the table below shows the main technical characteristics and functionality of such applications.
Table 1. Features of the functioning of online applications for generating a random number
Name Social network Multiple results Select from a list of numbers Online Widget for Website Select from a range Turn off repetitions randstuff Yes Yes No Yes No Cast Lots Official site or VKontakte No No Yes Yes Yes Random number Official site No No No Yes Yes Randomus Official site Yes No No Yes No random numbers Official site Yes No No No No All applications discussed in the table are described in more detail below.
<Рис. 2 Случайные числа>
randstuff
<Рис. 3 RandStuff>
You can use this application online using the link to its official website http://randstuff.ru/number/.
This is a simple random number generator, characterized by fast and stable operation.
It is successfully implemented both in the format of a separate independent application on the official website, and as an application in the VKontakte social network.
The peculiarity of this service is that it can choose a random number both from the specified range and from a specific list of numbers that can be specified on the site.
Pros:
- Stable and fast work;
- Lack of direct link to the social network;
- You can select one or more numbers;
- You can only choose from the given numbers.
Minuses:
- The impossibility of holding a draw on VKontakte (this requires a separate application);
- Applications for VKontakte do not run in all browsers;
- The result sometimes seems predictable, since only one calculation algorithm is used.
User reviews about this application are as follows: “We determine the winners in VKontakte groups through this service. Thank you”, “You are the best”, “I use only this service”.
Cast Lots
<Рис. 4 Cast Lots>
This application is a simple function generator, implemented on the official website, in the form of a VKontakte application.
There is also a generator widget to embed on your site.
The main difference from the previous described application is that this allows you to disable the repetition of the result.
That is, when conducting several generations in a row in one session, the number will not repeat.
- The presence of a widget to insert on a website or blog;
- Ability to disable the repetition of the result;
- The presence of the function "even more randomness", after the activation of which the selection algorithm changes.
Negative:
- The impossibility of determining several results at once;
- Inability to select from a specific list of numbers;
- To select a winner in public, you must use a separate VKontakte widget.
User reviews are as follows: “It works stably, it is quite convenient to use”, “Convenient functionality”, “I use only this service”.
Random number
<Рис. 5 Случайное число>
This service is located at http://random number.rf/.
A simple generator with minimum of functions and additional features.
Can randomly generate numbers within a given range (maximum from 1 to 99999).
The site does not have any graphic design, and therefore the page is easy to load.
The result can be copied or downloaded with the click of a button.
Negative:
- No widget for VKontakte;
- There is no possibility of holding draws;
- There is no way to insert the result into a blog or website.
Here is what users say about this service: “Good generator, but not enough functions”, “Very few features”, “Suitable for quickly generating a number without unnecessary settings.”
Randomus
<Рис. 6 Рандомус>
You can use this random number generator at http://randomus.ru/.
Another simple one, but functional random number generator.
The service has sufficient functionality for determining random numbers, however, it is not suitable for holding draws and other more complex processes.
Negative:
- The impossibility of holding draws based on post reposts, etc.
- There is no application for VKontakte or a widget for the site;
- It is not possible to disable repeating results.
