CCNA, CCNP, MCSA, CCNA Final Exam, All Answer Test Module With 100/100

Today I needed a simple algorithm for checking if a number is a power of 2.

I'm trying to convert a Math Formula into PHP code. You can see the formula in the accepted answer here: Applying a Math Formula in a more elegant way (maybe a recursive call would do the trick) .

I'm looking for a library to do numerical computing in Scala (or Java, although something that can use scala functions would be way nicer!) with at least the following capabilities:

When I type in an array into the parameter of the javascript math minimum and maximum functions, it returns the correct value:

Could you please suggest any simple Java statistics packages? I don't necessarily need any of the advanced stuff. I was quite surprised that there does not appear to be a function to calculate the Mean in the java.lang.Math package...

I've been doing some research for a mathematical Android related project I'd like to embark upon and I stumbled across for the first time MathML.

What would be best way to get the answer to this question which is using random numbers and random operators. editTextEquation.setText(random1 +(String.valueOf(ops[i1]) + random2 + (String.valueOf(ops[i2])+ random3 + (String.valueOf(ops[i3])+ random4)))); I'm displaying this question and then will check the answer against user input. I'm guessing I'd need to store the answer first. Any help/advice will be very much appreciated. Here is how I am generating the expression: int random1 = (int)(Math.random()*100); int random2 = (int)(Math.random()*100); int random3 = (int)(Math.random()*200); int random4 = (int)(Math.random()*20); int min = 0; int max = 3; Random r = new Random(); int i1 = r.nextInt(max - min); int i2 = r.nextInt(max - min); int i3 = r.nextInt(max - min); char[] ops = { '+', '-', '/', '*' }; int answer;