lottery prediction algorithm

This article is mainly for you to introduce the PHP implementation of the large turntable lottery algorithm, with a certain reference value, interested in small partners can refer to The example of this article for everyone to share the PHP implementation of the Dial Lottery algorithm specific code for your reference,

PHP lottery algorithm write lottery is nothing more than starting with probability, the probability of each level of prize is the percentage of the total weight of this weight $ Arr = array (Array ('prize' => 'first', 'weight' => 10 ),Array ('prize' => 'second', 'weight' => 10 ),Array ('prize' => 'third', 'weight' => 80)// Sort the weights in sequence, and ensu

/** * Full probability calculation * * @param array $p Array (' A ' =>0.5, ' B ' =>0.2, ' C ' =>0.4) * @return String returns the key of the above array */ function Random ($ps) { Static $arr = Array (); $key = MD5 (serialize ($ps)); if (!isset ($arr [$key])) { $max = Array_sum ($ps); foreach ($ps as $k = = $v) { $v = $v/$max * 10000; for ($i =0; $i } } return $arr [$key][mt_rand (0,c

prize, and V indicates the probability of winning. Note that the V must be an integer, and you can set the V of the corresponding prize to 0, meaning that the odds of the prize being pumped are 0, the sum of V in the array (cardinality), and the larger the cardinality, the more accurate the probability. In this case, the sum of V is 100, then the winning probability of the tablet computer is 1%, if the sum of V is 10000, then the probability of winning is one out of 10,000.Every time a front-en

The example of this article for everyone to share the Java Lottery algorithm for your reference, the specific contents are as follows 1. Algorithm analysisaccording to the probability the prizes are divided into intervals, each interval represents a prize, and then the random number is extracted, and the retrieval falls on that interval, which is the prize. 2

value of K minus the probability space of the first number, in this case, minus 100, that is, the second number is filtered within the 1,900 range. In this way, there will always be a number to meet the requirements. is equivalent to go to a box to touch things, the first is not, the second is not, the third is not, then the last one must be. The algorithm is simple and very efficient, and the key is that it has been used in our previous projects, es

The php winning probability algorithm is a typical probability algorithm used in lottery algorithms such as scratch cards and big turntable. * The key is that this algorithm has been applied in our previous projects, especially for projects with large data volumes, the efficiency is very good. $ ProCur) {$ randNum =

1. Algorithm AnalysisThe prizes are divided according to probabilities, each interval represents a prize, and then a random number is taken, and a counter-check falls on that interval, which is the prize drawn.2. CodeCore algorithmspublic class Arithmetic {//magnification private static final int mulriple = 1000000; public int Pay (listPrize Beanpublic class Prize { /** * Prizes only marked */ private Integer Prizeid; /** * Win

Php prize winning probability algorithm, which can be used for scratch cards, big turntable, and other lottery algorithms $ ProCur) {$ randNum = mt_rand (1, $ proSum); if ($ randNum

The php winning probability algorithm can be used to draw lottery algorithms such as scratch cards and big turntable. The usage is very simple. The Code has a detailed description, which can be understood at a glance.

This paper mainly introduces PHP programming to achieve the calculation of lottery probability algorithm, combined with a complete example of the PHP random number operation related operation skills, the need for friends can refer to, hope to help everyone. Operation Result: Ipad

Set up a winning list Field description idPrize number prizePrize name vProbability of winning$prize_arr = array(array(‘id‘ => 1, ‘prize‘ => ‘笔记本电脑‘, ‘v‘ => 1),array(‘id‘ => 2, ‘prize‘ => ‘华为手机‘, ‘v‘ => 5),array(‘id‘ => 3, ‘prize‘ => ‘蓝牙音箱‘, ‘v‘ => 10),array(‘id‘ => 4, ‘prize‘ => ‘1000积分‘, ‘v‘ => 12),array(‘id‘ => 5, ‘prize‘ => ‘30积分‘, ‘v‘ => 22),array(‘id‘ => 6, ‘prize‘ => ‘下次没准就能中哦‘, ‘v‘ => 50),); Package winning probability functionfunction get_rand($proArr){ $resul

PHP winning probability algorithm, can be used for scraping cards, large turntable, such as lottery algorithm. The usage is very simple, the code has the detailed annotation explanation, at a glance can understand $proCur) { $randNum = Mt_rand (1, $proSum); if ($randNum $result = $key; Break } else { $proSum-= $proCur; } } Unset ($PROARR); return $res

Weighted random in the game development of heavy use, a variety of sweepstakes and explosive equipment.Operations to configure the probability of each item appearing as needed.That's what we're going to say today. The idea of the weighted stochastic algorithm is very simple, that is, " all the items according to their weights constitute a range, the weight of large interval large." You can imagine a pie chart. Then, throw the dice and see what interva