math

相关标签：javascript jquery android 多少钱 iPhone

Stock exchange party calculations

I\'m writing a program (http://dancingrobots.org/beurs/) for my youth club that calculates prices of drinks by the number of times it has been bought in the last round (quite a fun party concept). Now[详细]

2023-04-11 08:47 分类：问答
How to generate a set of values that follow certain distribution in c++/java?

F开发者_如何转开发or example, I have a p.d.f f(x) = 1/25 - x/1250 (from x = 0 to 50); My question is that how to generate a set of values that satisfy the given p.d.f.[详细]

2023-04-11 06:46 分类：问答
Arithmetic vs logical shift operation in C++

I have some code that stuffs in parameters of various length (u8, u16, u32) into a u64 with the left shift operator.[详细]

2023-04-11 06:40 分类：问答
Retrieve multiple information by a single number?

I was wondering how they did come up with the way of setting permissions using chmod by开发者_如何学JAVA just using numbers. For example:[详细]

2023-04-11 05:04 分类：问答
Translate integer to letters and vice versa (e.g. 0 = "A", 26 = "AA", 27 = "AB")

So I have this function: function toAlpha($data){ $alphabet =array(\'a\',\'b\',\'c\',\'d\',\'e\',\'f\',\'g\',\'h\',\'i\',\'j\',\'k\',\'l\',\'m\',\'n\',\'o\',\'p\',\'q\',\'r\',\'s\',\'t\',\'u\',\'v\',\[详细]

2023-04-11 03:57 分类：问答
Tricky conditional maths

This one is tricky to me: I have four groups of 8 LEDs.A is 1-8, B is 9-16, C is 17-24, and D is 25-32.[详细]

2023-04-11 03:29 分类：问答
Simple Multiplication and Arithmetic in C

I have an assignment to compute the roots of quadratic equations in C, should be pretty simple and I know what I need to do with the program but I am having a problem nonetheless.[详细]

2023-04-11 02:14 分类：问答
Function to count decimal places with PHP

Is there a native PHP function which tells me how many decimal places a number 开发者_开发技巧has, or will I have to make my own?[详细]

2023-04-11 00:52 分类：问答
javascript make a numbers to be multiples of 150

I\'m trying to get numbers to be multiples of 150. (all the num > 0) if num = 0.333333 => output 150[详细]

2023-04-10 23:12 分类：问答
PHP actuarial-type probability formula

How would I convert the following formula to php to solve for \"p\": (1-p)^365=.80 What I\'m trying to do is calculate the daily probability of an event based on the annual probability. For example[详细]

2023-04-10 19:52 分类：问答