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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) 12345
(C) 124
(D) 135

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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) 12345
(C) 1
(D) Infinite times

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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) 3
(C) 1
(D) 0

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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) 12345
(C) 22222
(D) 14385

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

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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) a b c d e
(C) 65 66 67 68 69
(D) None of the above

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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) abcde
(C) Compilation Error
(D) Some Garbage Value

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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

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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) 12345
(C) Compilation Error
(D) ArrayIndexOutOfBoundsException

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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) Compilation Error
(C) 246810
(D) Exception

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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 Value
(C) It depends on type of array
(D) It depends on Compiler

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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 1 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

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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) 0
(C) null
(D) IndexOutOfBoundsException

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

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

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

Java Interview Questions on Arrays - 14

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Shortcut links - MCQs

Subjective Questions

Solved Problems

Free Projects

Online Compiler

Upload Questions

Online Test

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