Question

Project:

Given an array numbers. We define a running sum of an array as runningSum[i] = sum(nums[0]…nums[i]).

Return the running sum of numbers.

Example:

Input: nums = [1,2,3,4]

Output: [1,3,6,10]

Explanation: Running sum is obtained as follows: [1, 1+2, 1+2+3, 1+2+3+4].

You need to do: Create a class called RunningSumArray to perform the main method. Create a class called ArrayOperationto hold the actions for array. In this project, you will need 4methods:

1. Public static Int[] getArray() --- inside ArrayOperationclass, using loop generate a n items array.

2. Public static void runnungSum(int[] inputArray) --- inside ArrayOperation class, process the array to calculate the sums. An array is an object, passing an array to a method is passing by reference.

3. Public static void printArray(int[] result) --- inside ArrayOperation class, print the array in a [1, 2, 3, 4, 5] form.

4. Public static void main(string[] args) --- Prompt user to input a whole number between 5 and 10, using the user input number to generate the array, perform calculation, and print out the array before and after calculation,

Answer 1

Code

ArrayOperation class

import java.util.Scanner;

public class ArrayOperation {
public static int[] getArray()
{
int n;
int inputArray[];
Scanner scnr=new Scanner(System.in);
System.out.print("Enter size of array between 5 to 10: ");
n=scnr.nextInt();
inputArray=new int[n];
for(int i=0;i<n;i++)
{
System.out.print("Enter "+(i+1)+" element: ");
inputArray[i]=scnr.nextInt();
}
return inputArray;
}
  
public static void runningSum(int[] inputArray)
{
int runningSumArray[]=new int[inputArray.length];
for(int i=0;i<inputArray.length;i++)
{
int sum=0;
for(int j=0;j<=i;j++)
sum+=inputArray[j];
runningSumArray[i]=sum;
}
System.out.print("After Running sum Array is: ");
ArrayOperation.printArray(runningSumArray);
}
public static void printArray(int[] result)
{
int i;
System.out.print("[");
for(i=0;i<result.length-1;i++)
System.out.print(result[i]+", ");
System.out.println(result[i]+"]");
}
}

RuunningSumArray class

public class RunningSumArray {
public static void main(String[] args) {
int inputArray[]=ArrayOperation.getArray();
System.out.print("Origingal array is: ");
ArrayOperation.printArray(inputArray);
ArrayOperation.runningSum(inputArray);
}
  
}

output

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