C# summation equation help

The code to do that would be:

Using the same logic below that you gave in the previous reply. its one more step i need to add to this, which is only multiplying and adding the range or limit that is inputed for the array, I do not want use a for loop, I want to do this using linq or something else within c sharp

So if someone were to execute CalcaluteArrayExpression function and they enter  2 for lowLimit put and 4 for highLimit input. That means to calculate all elements in the array from range of 2 to 4. Below you will see the example thats highlighted thats needed to be evaluted. The highlighted section of the array is the range  from the input. Can someone help me

void CalcaluteArrayExpression(LowLimit, HighLimit)
{

   
}

1. Multiply Array1.item2 * Array2.item2

(Array1[0].item2 = 1.0;   *   Array2[0].item2 = 1.0;)  =     1     
(Array1[1].item2 = 2.0;   *   Array2[1].item2 = 2.0;)  =     4
(Array1[2].item2 = 3.0;   *   Array2[2].item2 = 3.0;)  =     9
(Array1[3].item2 = 4.0;   *   Array2[3].item2 = 4.0;)  =     16
(Array1[4].item2 = 5.0;   *   Array2[3].item2 = 5.0;)  =     25
--------------------------------------------------
                                             Summation  Total    =     50  
Array1 [0].item2 = 1.0;
Array1 [1].item2 = 2.0;
Array1 [2].item2 = 3.0;
Array1 [3].item2 = 4.0;
Array1 [4].item2 = 5.0;
------------------
Denominator   summation total = 12


4.  Divide  Top  / Bottom   =  Final output  3.65

I am going to try to make this easier to explain of what i am trying to do, ok out of the 10 to 12 arrays that I am going to be using for my project, I only need two for the math example below.

Lets Begin.

Formula:  Summation ( Array1 * Array2)        Top         Numerator
             -----------------------------   =  -------  = -----------    =  Output
              Summation ( Array1 )                   Bottom     Denominator
             
      
        
Since we are using a dictionary list of tuples, we are using item 2 of the tuple arrays or tuple item. We are multiplying item2 of each array. Let me know if this clear. Don't get to caught at the moment why i am using a dictionary list of tuples.


1. Multiply Array1.item2 * Array2.item2

(Array1[0].item2 = 1.0;   *   Array2[0].item2 = 1.0;)  =     1     
(Array1[1].item2 = 2.0;   *   Array2[1].item2 = 2.0;)  =     4
(Array1[2].item2 = 3.0;   *   Array2[2].item2 = 3.0;)  =     9
(Array1[3].item2 = 4.0;   *   Array2[3].item2 = 4.0;)  =     16
(Array1[4].item2 = 5.0;   *   Array2[3].item2 = 5.0;)  =     25
--------------------------------------------------
                               Summation Total  =     55
                                                             
2. Take the Summation of the (Array1.item2 * Array2.item2) output
                               
  Numerator Summation Total  =     55  


3. For the numerator of the formula take the Summation of the (Array1.item2) output

Array1 [0].item2 = 1.0;
Array1 [1].item2 = 2.0;
Array1 [2].item2 = 3.0;
Array1 [3].item2 = 4.0;
Array2 [4].item2 = 5.0;
------------------
Denominator   summation total = 15


4.  Divide  Top  / Bottom   =  Final output  3.65

I can't go into to much detail, but to give you a summary I using a dictionary of tuples, I am using at least 10 to 12 arrays for what I have to do with import and exporting data, and also analyzing data.  I truly apologize for the inconvience.

enum ArrayType
{
  
   Array1,
   Array2,
   Array3,
   Array4
}

Dictionary< ArrayType, List>> dictionaryItems   = new Dictionary< ArrayType, List>>();

foreach( var  arrayItem in Enum.GetValues(ArrayType))
{
   dictionaryItems[arrayItem].Add(item1, item2);
}

review next reply. I am breaking everything up into two replies.

All that the example you've uploaded shows is a summation formula involving 2 arrays.

It's not clear to me how this formula is to be applied to the complex Dictionary you're using rather than a simple array. 

If it's to be applied to the values which are of type List>, then what part of this is to be summed and how are the values in one Dictionary to be associated with the values in another Dictionary? There's no obvious ordering here as the Key is an enum with just two values.

Also what are 'Tuples' and  'doubles' - are they custom types you've defined?

i  sent an example.

review early posts i define Arrays, let me know if the early examples are not clear. i will try and send again

i  sent an example.

review early posts i define Arrays, let me know if the early examples are not clear. i will try and send again

i  sent an example.

review early posts i define Arrays, let me know if the early examples are not clear. i will try and send again

Vuples that seems right, i never use the  the zip function. let me try it out. instead of using double array, im using Dictionary of a lists to tuples, how can i apply the linq below using what you did earlier.

Its not working for me, how would you apply that using the

Hi , I was looking more of link to this, because im ultimately going to be dealing with 6 arrays,

so I want to use linq instead, can you help me produce the linq instead.

so basically i  truly have is below

enum ArrayType
{
  
   Array1,
   Array2,
   Array3,
   Array4
}

Dictionary< ArrayType, List>> dictionaryItems   = new Dictionary< ArrayType, List>>();

foreach( var  arrayItem in Enum.GetValues(ArrayType))
{
   dictionaryItems[arrayItem].Add(item1, item2);
}

Now you notice everything is in the dictionaryItems, i want to come up with good link to figure out the summation below
After that, I want to produce the logic to to the summation of arrays below. review equation again and and also review attachment to look at the formula i am trying to apply in code for the Arrays. My output is a single value.


 output = (Summation ( Array1 *  Array2)) / (Summation (Array1)

Here's two ways to do what you want  - using the traditional method and using LINQ:

Hi , I was looking more of link to this, because im ultimately going to be dealing with 6 arrays,

so I want to use linq instead, can you help me produce the linq instead.

so basically i  truly have is below

enum ArrayType
{
  
   Array1,
   Array2,

}

Dictionary< ArrayType, List>> dictionaryItems   = new Dictionary< ArrayType, List>>();

foreach( var  arrayItem in Enum.GetValues(ArrayType))
{
   dictionaryItems[arrayItem].Add(item1, item2);
}

Now you notice everything is in the dictionaryItems, i want to come up with good link to figure out the summation below
After that, I want to produce the logic to to the summation of arrays below. review equation again and and also review attachment to look at the formula i am trying to apply in code for the Arrays. My output is a single value.


 output = (Summation ( Array1 *  Array2)) / (Summation (Array1)

I wrote the code for console application which should answer your question. For any further doubts get back to me.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections;

namespace interest_calculation
{
    class Program
    {
        static void Main(string[] args)
        {
                int i = 0;
                Console.Write("Enter the array size : ");
                i = Convert.ToInt32(Console.ReadLine());
                Double[] array1 = new Double[i];
                Double array1_summation = 0;
                for (int index = 0; index < array1.Length; index++)
                {
                    Console.Write("\nEnter the " + index + "th array element : ");
                    array1[index] = Convert.ToDouble(Console.ReadLine());
                    array1_summation = array1_summation + array1[index];
                }
                Console.WriteLine("array1 summation is :" + array1_summation);
                Console.WriteLine("Enter the 2nd array elements");
                Double[] array2 = new Double[i];
                Double array2_summation = 0;
                for (int index1 = 0; index1 < array2.Length; index1++)
                {
                    Console.Write("\nEnter the " + index1 + "th array element : ");
                    array2[index1] = Convert.ToDouble(Console.ReadLine());
                    array2_summation = array2_summation + array2[index1];
                }
                Console.WriteLine("array2 summation is :" + array2_summation);

                Double summation_result = array1_summation * array2_summation;
                Console.WriteLine("summation of array1 and array2 is :" + summation_result);
                Double result = summation_result / array1_summation;
                Console.WriteLine("final result :" + result);
                Console.ReadLine();
        }
    }
}