A single dimensional array has 50 elements, which of the following is the correct statement to initialize the last element to 100.

1. x[51]=100
2. x[48]=100
3. x[49]=100
4. x[50]=100

Write a Java program to store n numbers in an one dimensional array. Pass this array to a function number(int a[]). Display only those numbers whose sum of digit is prime.

Define a class pin code and store the given pin codes in a single dimensional array. Sort these pin codes in ascending order using the Selection Sort technique only. Display the sorted array.

110061, 110001, 110029, 110023, 110055, 110006, 110019, 110033

Define a class to accept values into 4x4 array and find and display the sum of each row.

Example:

A[][]={{1,2,3,4},{5,6,7,8},{1,3,5,7},{2,5,3,1}}

Output:

sum of row 1 = 10 (1+2+3+4)
sum of row 2 = 26 (5+6+7+8)
sum of row 3 = 16 (1+3+5+7)
sum of row 4 = 11 (2+5+3+1)