Explanations “Top Java Quiz Questions”

What is the result of the following?

import java.util.Arrays;
public class Main {
  public static void main(String []args){
  int[] random = { 6, -4, 100, 12, 0, -10 };
  int x = 12;
  int y = Arrays.binarySearch(random, x);
  System.out.println(y);
 }
}

❌ A. 2
❌ B. 3
❌ C. 4
❌ D. 6
✅ E. -3
❌ F. An exception is thrown.
❌ G. The code does not compile

Explanation:
The code compiles and runs fine. However, an array must be sorted for binarySearch() to return a meaningful result. If it is not sorted, the results are undefined.

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398 viewsJan 29, 2021 at 09:52

What is the result of the following?

import java.util.Arrays;
public class Main {
  public static void main(String []args){
  int[] random = { 6, -4, 100, 12, 0, -10 };
  int x = 12;
  int y = Arrays.binarySearch(random, x);
  System.out.println(y);
 }
}

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