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Java Interview Questions on Arrays - 14

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

Forum
Level: Beginner Category: 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

Forum
Level: Beginner Category: 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

Forum
Level: Beginner Category: 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

Forum
Level: Beginner Category: 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

Forum
Level: Expert Category: 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

Forum
Level: Expert Category: 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

Forum
Level: Beginner Category: 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

Forum
Level: Practitioner Category: 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

Forum
Level: Expert Category: 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

Forum
Level: Practitioner Category: 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

Forum
Level: Beginner Category: 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

Forum
Level: Practionar Category: 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

Forum
Level: Practionar Category: 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??
(D) Compilation/RuntimeError

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

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Home » Java » Java Interview Questions on Arrays

Java Interview Questions on Arrays - 14

Browse Java Categories

CppBuzz Forum☆

Shortcut links - MCQs

Subjective Questions

Solved Problems

Free Projects

Online Compiler

Upload Questions

Online Test

CppBuzz Forum^☆