Name the below structure:

1. One dimensional array
2. Two Dimensional array with 4 rows and 5 columns
3. Three dimensional array
4. Two Dimensional array with 5 rows and 4 columns

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)

A class teacher wants to arrange the names of her students in alphabetical order. Define a class NameSorter that stores the given names in a one-dimensional array. Sort the names in alphabetical order using Bubble Sort technique only and display the sorted names.

Aryan, Zoya, Ishaan, Neha, Rohan, Tanya, Manav, Simran, Kabir, Pooja

public class NameSorter
{
    void bubbleSort(String names[]) {
        int len = names.length;
        _______(1)_________ {
            _______(2)_________ {
                _______(3)_________ {
                    String t = names[j];
                    _______(4)_________
                    _______(5)_________
                }
            }
        }
    }
    
    public static void main(String[] args) {
        
        String arr[] = {"Aryan", "Zoya", 
                        "Ishaan", "Neha", 
                        "Rohan", "Tanya", 
                        "Manav", "Simran", 
                        "Kabir", "Pooja"
                       };
                       
        NameSorter obj = new NameSorter();
        obj.bubbleSort(arr);
        
        for (int i = 0; i < arr.length; i++) {
            System.out.println(arr[i]);
        }
    }
}

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