Java Arrays.binarySearch(double[] a, int fromIndex, int toIndex, double key)
Syntax
Arrays.binarySearch(double[] a, int fromIndex, int toIndex, double key) has the following syntax.
public static int binarySearch(double[] a, int fromIndex, int toIndex, double key)
Example
In the following code shows how to use Arrays.binarySearch(double[] a, int fromIndex, int toIndex, double key) method.
Binary search needs sorted arrays.
//w w w . j ava 2s . c o m
import java.util.Arrays;
public class Main {
public static void main(String[] args) {
// initializing sorted double array
double doubleArr[] = {5.4,5.5,9.2,9.3,35.4};
// value to search
double searchVal = 5.4;
// entering the range of index
int retVal = Arrays.binarySearch(doubleArr,1,3,searchVal);
System.out.println("The index of element 5.4 is : " + retVal);
}
}
The code above generates the following result.
Home »
Java Tutorial »
java.util »
Java Tutorial »
java.util »