Weekly Contest #3 - TechXNinjas

Write the single-line statement for the array initialization by considering the following points

array name: a

data type: integer

size of an array: 5

(a)  

What is the value of 'm' in the following 2-dimensional array?

0 0 0

0 0 0

0 0 0

0 0 0

int a [] [] = new int [m] [n];

• 3

• 2

• 4

• 0

Choose the wrong array initialization from the following integer type array "arr" having size "n".

• int arr [];

  arr = new int [n];

• int [] a = new int [n];

• int a [] = new int [n];

• int arr [];

  arr [] = new int [n];

Which of the following correctly declares an array and a variable of the same integer type in a single line?

• int [] arr, x ;

• int x, arr [] ;

• int arr [], x ;

• int x = 5, arr [] ;

Guess the output of the following array snippet

int [] a = new int [4];

for(int i=0;i<4;i++) {

system.out.println(a[i]);

}

• 0000

• 4

  4

  4

  4

• 4444

• 0

  0

  0

  0

Determine whether the following statement is true or false:

Statement: Arraylist and Vector come under the dynamic type of array

• True

• False

Determine whether the following statement is true or false:

Statement: we can return anything inside a function with a "void return type".

• True

• False

Which of the following conditions ensures an array is sorted:

(you can choose multiple options)

• Array is empty

• Array contains only one item

• Every next element is greater or equal to the previous one

• None of the Above

what is the output of the following 2D array JAVA snippet

public class Myclass{

public static void main (String [] args){

int m=2, n=3;

int a [] [] = new int [m] [n];

for(int i=0;i<a.length;i++){

for(int j=0;j<a[i].length;j++){

System.out.print( a[i][j] );

}

System.out.println("");

}

}

}

• 000

  000

• 000000

• 000 000

• 00

  00

  00

Choose the appropriate word to make statement meaningful

Statement: Array is a collection of __________ type of data.

• different

• small

• similar

• large