How to find length of long in Java
How to find length of long in Java
I'd be happy to help! However, I need to clarify that you want me to respond in English only.
To find the length of an array or a string (which is often referred to as "long" in programming parlance) in Java, there are several ways to do so. Here are some approaches:
Using thelength
property for arrays and strings: In Java, you can directly use the length
property to find the length of an array or string.
int[] myArray = {1, 2, 3};
System.out.println("Length of array: " + myArray.length);
String myString = "Hello";
System.out.println("Length of string: " + myString.length);
In this case, the length
property returns an integer representing the number of elements in the array or the number of characters in the string.
int[] myArray = {1, 2, 3};
int length = 0;
for (int i : myArray) {
length++;
}
System.out.println("Length of array: " + length);
String myString = "Hello";
length = 0;
for (char c : myString.toCharArray()) {
length++;
}
System.out.println("Length of string: " + length);
In this case, the loop iterates over each element in the array or character in the string and increments a counter variable (length
) until it reaches the desired count.
int[] myArray = {1, 2, 3};
int length = (int) Arrays.stream(myArray).count();
System.out.println("Length of array: " + length);
String myString = "Hello";
length = (int) myString.chars().count();
System.out.println("Length of string: " + length);
In this case, the Arrays.stream()
method creates a stream from an array, and the chars()
method does the same for a string. The count()
method then returns the number of elements in the stream, which represents the length.
ArrayUtils
class and use its length()
method:
import org.apache.commons.lang.ArrayUtils;
int[] myArray = {1, 2, 3};
System.out.println("Length of array: " + ArrayUtils.length(myArray));
String myString = "Hello";
System.out.println("Length of string: " + ArrayUtils.length(new String[]{myString}.clone()));
In this case, the length()
method returns an integer representing the number of elements in the array.
These are some of the ways you can find the length of an array or string (often referred to as "long") in Java. Each approach has its own advantages and disadvantages, depending on your specific requirements.
Size of float in Java
I'd be happy to help with that.
In Java, the float
data type is a single precision floating-point number. It has a total of 32 bits, which are divided into three parts:
1
, so it's effectively 24 bits.
Here's a breakdown of the size and precision of float
in Java:
0.123456
) Range: Minimum value: Approximately -3.4 × 10^38 (negative infinity) Maximum value: Approximately 1.4 × 10^38 (positive infinity)
In practice, the actual range of values that can be represented by a float
depends on the specific implementation and the platform you're running Java on.
It's worth noting that while float
has a smaller size than double
, which is a double precision floating-point number, it still provides a good balance between accuracy and memory usage for many applications. In fact, most graphics programming and games use float
values to store coordinates, colors, and other numerical data.
However, if you need higher precision or more extensive range of values, you may want to consider using double
(64 bits) or even long double
(80 bits) instead.