Question

How to perform binary search on double Array in Java

Answer 1

package javaapplication1;

import java.util.Arrays;

public class JavaApplication1 {

    public static void main(String[] args) {

        double doubleArr[] = {9.87, 2.12, 1.88, 3.14, 5.99, 4.11};
   
        Arrays.sort(doubleArr);

        double d = 3.14;

        int r = Arrays.binarySearch(doubleArr, d);
        System.out.println(r);
    }
}
 
/*
run:
 
2
 
*/

 

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Answer 2

package javaapplication1;

import java.util.Arrays;

public class JavaApplication1 {

    public static void main(String[] args) {

        double doubleArr[] = {9.87, 2.12, 1.88, 3.14, 5.99, 4.11};
   
        Arrays.sort(doubleArr);

        double d = 9.18;
        int r = Arrays.binarySearch(doubleArr, d);
        System.out.println(r);

        d = 9.99;
        r = Arrays.binarySearch(doubleArr, d);
        System.out.println(r);
        
        d = 128.912;
        r = Arrays.binarySearch(doubleArr, d);
        System.out.println(r);
    }
}
 
/*
run:
 
-6
-7
-7
 
*/

 

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