I'm looking for the fastest way to determine if a long value is a perfect square (i.e. its square root is another integer). I've done it the easy way, by ...
long
Hmmm. Consider this program, whose goal is to figure out the best way to get the bottom 16 bits of an integer, as a signed integer.
public class SignExtend16 {
public static ...
I am trying to implement Pollard Rho integer factorization in C/C++.Google gives me a Java implementation of the problem here.
I don't know Java that well,so what I came up ...
I've done some searching on google, but I can't seem to find what I'm looking for. I'm trying to find out some detailed information on the way arithmetic works in Java. ...
i has a int:
int f=1234;//or f=23 f=456 ...
float result=0.1234; // or 0.23 0.456 ...
float result = parseFloat ("0."+f);
I had some doubts/questions about the math in Java, so I made a small program a screenshot of which you can see in this link:
How are such numbers even ...
I realize the below code holds true
Integer.MIN_VALUE == -Integer.MIN_VALUE == Math.abs(Integer.MIN_VALUE)
-2147483648
+2147483648
In Java what happens when you increment an int (or byte/short/long) beyond it's max value ? Does it wrap around to the max negative value ?
Does AtomicInteger.getAndIncrement() also behave in the ...
Let's say I've got two integer values stored in double variables, e. g.:
double
double x = 100.0;
double y = 7.0;
This code:
System.out.println(Math.abs(Integer.MIN_VALUE));
2147483648
I want to set a limit to an int value I have in Java. I'm creating a simple health system, and I want my health to stay between 0 and 100. ...
int
I have tried to separate 5.6 (for example) by the following method:
private static double[] method(double d)
{
int integerPart = 0;
double fractionPart = 0.0;
...
How to set decision variables types like binary, int, double in Apache Commons Math SimplexSolver? The output of the program below is this:
SimplexSolver
332.6666666666667
1.0
8331.666666666668
For some reason my math just returns 0. The value are set, I have checked.
int currentSize = 4079;
int totalSize = 500802;
int percentage = ((currentSize/totalSize) * 100);
progdialog.setProgress(percentage);
Suppose, I need to calculate 3 * (2 / 3) = 2 but 3 * (2 / 3) = 0 in integer arithmetic. So, it looks like I should use floating-point ...
3 * (2 / 3) = 2
3 * (2 / 3) = 0
There isn't a "mathematical" proof because you aren't asking about a mathematical concept, you're asking about how Java implements things. However there's a logical proof which would parallel the mathematical proof of that question. Assuming your "x" is an integer, there are four possibilities: x can be odd or even, and it can be negative or non-negative. Consider each of them ...
Does anyone know of an efficient way to perform math on an Integer class or a better way to store an integer value as an object that is mutable? I have a TreeMap that looks like this ... What is the best approach? public TreeMap adjustTreeMap(String key, TreeMap treeMap) { Integer count; if(treeMap.containsKey(key)) { count = treeMap.get(key).intValue(); int i = ...
I want to generate a integer which should be combination of 2 integer and one int and anytime I call generate it should generate same value for same input and for different combinations it should generate different value. for example I passed to the service two integers 24, 25 and one int 76 assume it generated 242576 I restart jvm to ...