You are here : Home » Java » Java Interview Questions on Arrays

Java Interview Questions on Arrays - 14 Questions

Question: 1

public class Main
{
public static void main(String[] args) {

               int arr[] = {1,2,3,4,5};
	    
		for(int i = 0 ; i<5; i++){ 
                   System.out.print(arr[i++]);
		}
	}
}

(A) 12345
(B) 123
(C) 124
(D) 135

Beginner arrays[Posted by: Admin | Chicago, USA]

Question: 2

public class Main
{
public static void main(String[] args) {
	    int arr[] = {1,2,3,4,5};
	    
		for(int i = 0 ; i<5; ){
		    System.out.print(arr[i]);
		}
	}
}

(A) 12345
(B) Nothing is printed
(C) 1
(D) Infinite times

Beginner arrays[Posted by: Admin | Chicago, USA]

Question: 3

public class Main
{
public static void main(String[] args) {

	    int arr[] = {1,2,3,4,5};

	    int count = 0;

		for(int i = 0 ; i<5; i++ ){
		    if(arr[i]%2==0)
		        count++;
		}
		System.out.print(count);
	}
}

(A) 3
(B) 2
(C) 1
(D) 0

Beginner arrays[Posted by: Admin | Chicago, USA]

Question: 4

public class Main
{
public static void main(String[] args) {
	    
            int arr[] = {1,2,3,4,5};
	    int count = 0;

		for(int i = 0 ; i<5; i++ ){
		    if(arr[i]%2==0)
		        arr[i] *= 2;
		    System.out.print(arr[i]);      
		}
		
	}
}

(A) 12345
(B) 135
(C) 22222
(D) 14385

Beginner arrays[Posted by: Admin | Chicago, USA]

Question: 5

public class Main
{
public static void main(String[] args) {

        int arr[] = {'a','b','c','d','e'};
	    
	for(int i = 0 ; i<5; i++){ 
            System.out.print(" " + arr[i]);
	}
    }
}

(A) a b c d e
(B) abcde
(C) 97 98 99 100 101
(D) 65 66 67 68 69

Expert arrays[Posted by: Admin | Chicago, USA]

Question: 6

public class Main
{
public static void main(String[] args) {
        int arr[] = {'a','b','c','d','e'};
	    
	for(int i = 0 ; i<5; i++){ 
	    System.out.print(" "+ (char)arr[i]);
	}
}
}

(A) a b c d e
(B) 96 97 98 99 101
(C) 65 66 67 68 69
(D) None of the above

Expert arrays[Posted by: Admin | Chicago, USA]

Question: 7

public class Main
{
public static void main(String[] args) {
   
     int arr[] = {'a','b','c','d','e'};
   
    System.out.print(arr);
}
}

(A) abcde
(B) 6566676869
(C) Compilation Error
(D) Some Garbage Value

Beginner arrays[Posted by: Admin | Chicago, USA]

Question: 8

public class HelloWorld
{
  public static void main(String[] args) {
	  
	char[] a = {'A', 'S', 'I', 'S', 'H'};
	
	int i = 4;
	
	do {
		System.out.print(a[i]);
		i--;
	}while (i>0);
	
	}
}

(A) ASISH
(B) asish
(C) HSISA
(D) HSIS

Practitioner arrays[Posted by: Asish | Des Moines USA]

Question: 9

Find the output of below program 

public class Main
{
	public static void main(String[] args) {
		int [] array = {1,2,3,4,5};
		
		for(int i = -1; i<5;i++)
		    System.out.print(array[i]);
		
	}
}

(A) 12345
(B) 1234
(C) Compilation Error
(D) ArrayIndexOutOfBoundsException

Expert arrays[Posted by: Admin | Chicago, USA]

Question: 10

public class Main
{
public static void function(int [] arr){
    
    for(int i = 0; i<5;i++)
	    arr[i] = arr[i] *2;
}

public static void main(String[] args) {
	int [] array = {1,2,3,4,5};
	
	function(array);
	
	for(int i = 0; i<5;i++)
	    System.out.print(array[i]);
	
}
}

(A) Compilation Error
(B) 12345
(C) 246810
(D) Exception

Practitioner arrays[Posted by: Admin | Chicago, USA]

Question: 11

In Java how arrays are passed in methods?

(A) Arrays are passed by Value
(B) Arrays are passed by Reference
(C) It depends on type of array
(D) It depends on Compiler

Beginner arrays[Posted by: Admin | Chicago, USA]

Question: 12

public class Main{
    
 public static void main(String[] args) {
     
 String[] stringArr = {"cpp ", "buzz "};
 
 for (int x = 0; x < 3; x++) {
     for (String s : stringArr) {
     System.out.print(x + " " + s);
     if (x == 1) {
     break;
     }
   }
  }
 }
}

(A) 0 cpp 0 buzz 1 cpp 1 buzz
(B) 0 cpp 0 buzz 1 cpp 2 buzz
(C) 0 cpp 0 buzz 1 cpp 1 buzz 2 cpp 2 buzz
(D) 0 cpp 0 buzz 1 cpp 2 cpp 2 buzz

Practionar arrays[Posted by: Admin | Chicago, USA]

Question: 13

import java.util.ArrayList;
import java.util.List;

public class Main {
 public static void main(String[] args) {
 List<Integer> elements = new ArrayList<>();
 elements.add(10);
 int firstElmnt = elements.get(1);
 System.out.println(firstElmnt);
 }
}

(A) 0
(B) 10
(C) null
(D) IndexOutOfBoundsException

Practionar arrays[Posted by: Admin | Chicago, USA]

Question: 14

public class Main
{
public static void main(String[] args) {
    
String string = "Hello. How are you?";    
char str1[] = string.toCharArray();
char str2[] = new char[21];
int pos;

for(pos=0; pos<18; pos++);
{
  str2[pos] = str1[pos];
}

System.out.print(str1);
System.out.print(str2);
}
}

(A) Hello. How are you?Hello. How are you?
(B) Hello. How are you?
(C) Hello. How are you?SomeGarbageCharacter
(D) Compilation/RuntimeError

Expert arrays[Posted by: Admin | Chicago, USA]

[Contribute to this Website]

You are here : Home » Java » Java Interview Questions on Arrays

Java Interview Questions on Arrays - 14 Questions

CppBuzz Forum^☆

Shortcut links - MCQs

Subjective Questions

Solved Problems

Free Projects

Online Compiler

Upload Questions

Online Test

You are here : Home » Java » Java Interview Questions on Arrays

Java Interview Questions on Arrays - 14 Questions

CppBuzz Forum☆

Shortcut links - MCQs

Subjective Questions

Solved Problems

Free Projects

Online Compiler

Upload Questions

Online Test

CppBuzz Forum^☆