Question

In Java

Write a program that reads an arbitrary number of 25 integers that are positive and even. The program will ask the user to re-enter an integer if the user inputs a number that is odd or negative or zero. The inputted integers must then be stored in a two dimensional array of size 5 x 5. Please create 3 methods: 1. Write a method public static int sum2DArray( int [1] inputArray ) The method sums up all elements in the array. The method takes an array as a parameter and returns a sum. 2. Write a method public static int columnMul(int[] [] inputArray, int x) that returns the multiplication of the elements in Column x of inputArray 3.Write a method public static int rowMul(int[] [] inputArray, int x) that returns the multiplication of the elements in Row x of inputArray

Answer 1

`Hey,

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import java.util.Scanner;
public class Test{
public static int sum2DArray(int[][] inputArray)
{
int s=0;
for(int i=0;i<inputArray.length;i++)
{
for(int j=0;j<inputArray[0].length;j++)
s+=inputArray[i][j];
}
return s;
}
public static int columnMul(int[][] inputArray,int x)
{
int p=1;
for(int i=0;i<inputArray.length;i++)
p=p*inputArray[i][x-1];
return p;
  
}
public static int rowMul(int[][] inputArray,int x)
{
int p=1;
for(int i=0;i<inputArray[x].length;i++)
p=p*inputArray[x-1][i];
return p;
  
}
  
public static void main(String []args){
System.out.println("Enter 25 elements greater than 0 and even");
Scanner sc=new Scanner(System.in);
int[][] inputArray=new int[5][5];
for(int i=0;i<5;i++)
{
for(int j=0;j<5;j++)
{
int num=sc.nextInt();
while(num<=0||num%2==1)
{
System.out.println("Please enter again");
num=sc.nextInt();
  
}
inputArray[i][j]=num;
}
}
System.out.println("sum2DArray is "+sum2DArray(inputArray));
System.out.println("columnMul is "+columnMul(inputArray,2));
System.out.println("rowMul is "+rowMul(inputArray,3));
  
}
}

.Execute > Share Source File STDIN 1.lı Result $javac Test.java return s; } Sjava -Xmx128M -Xms 16M Test public static int columnMul(int[] [] inputArray, int x) { 10 11 12 13 14 15 16 17 18 19 20 21 int p=1; for(int i=0;i<inputArray.length; i++) p=p*inputArray[i][x-1]; return p; Enter 25 elements greater than 0 and even Please enter again Please enter again Please enter again sum2 DArray is 150 columnMul is 1024 rowMul is 3840 بها public static int rowMul(int[] [] inputArray, int x) { int p=1; for(int i=0;i<inputArray[x].length; i++) p=p*inputArray[x-1][i]; return p; بهما 29 30 31 public static void main(String [args) { System.out.println("Enter 25 elements greater than 0 and even"); Scanner sc=new Scanner(System.in); int[][] inputArray=new int[5][5]; for(int i=0;i<5;i++) { 35 36 37 38 39 АП, for(int j=0; j<5;j++) { int num=sc.nextInt(); while(num<=0||num%2==1)

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