title: Sum Matrix Element Absolute Difference Row Column Numbers
signature: class Solution {
  
      public int SumMatrixElementAbsoluteDifferenceRowColumnNumbers(int n) {
test_code: using System;
  using System.Numerics;
  using System.Diagnostics;
  using System.Collections.Generic;
  using System.Linq;
  using System.Text;
  using System.Security.Cryptography;
  using System.Web.UI;
  using System.Web.Script.Serialization;
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  namespace EvaluatePrediction {
      class TestRunner {
          public bool ValidateSolution(int actual, int expected){
              return new JavaScriptSerializer().Serialize(actual) == new JavaScriptSerializer().Serialize(expected);
          }
  
          public string driver(int n, int expected){
              try{
                PLACEHOLDER_CLS_NAME solution_cls = new PLACEHOLDER_CLS_NAME();
                int pred_result = solution_cls.PLACEHOLDER_FN_NAME(n); 
                if (ValidateSolution(
                      pred_result,
                      expected)){
                  return "PASSED";
                }
                return "FAILED";
              } 
              catch (Exception exception_obj)
              {
                return exception_obj.GetType().FullName;
              }
          }
          static void Main(string[] args) {
              TestRunner runner = new TestRunner();
              String result;
              result = runner.driver(
                  60, 
                  71980
              );
              Console.WriteLine(string.Format(
                  "TEST-0...{0}",
                  result)
              );result = runner.driver(
                  44, 
                  28380
              );
              Console.WriteLine(string.Format(
                  "TEST-1...{0}",
                  result)
              );result = runner.driver(
                  72, 
                  124392
              );
              Console.WriteLine(string.Format(
                  "TEST-2...{0}",
                  result)
              );result = runner.driver(
                  90, 
                  242970
              );
              Console.WriteLine(string.Format(
                  "TEST-3...{0}",
                  result)
              );result = runner.driver(
                  99, 
                  323400
              );
              Console.WriteLine(string.Format(
                  "TEST-4...{0}",
                  result)
              );result = runner.driver(
                  45, 
                  30360
              );
              Console.WriteLine(string.Format(
                  "TEST-5...{0}",
                  result)
              );result = runner.driver(
                  27, 
                  6552
              );
              Console.WriteLine(string.Format(
                  "TEST-6...{0}",
                  result)
              );result = runner.driver(
                  11, 
                  440
              );
              Console.WriteLine(string.Format(
                  "TEST-7...{0}",
                  result)
              );result = runner.driver(
                  65, 
                  91520
              );
              Console.WriteLine(string.Format(
                  "TEST-8...{0}",
                  result)
              );result = runner.driver(
                  52, 
                  46852
              );
              Console.WriteLine(string.Format(
                  "TEST-9...{0}",
                  result)
              );
          }
      }
  }
  
source_py: def sum_matrix_element_absolute_difference_row_column_numbers(n):
      arr = [[0 for x in range(n)] for y in range(n)]
      for i in range(n):
          for j in range(n):
              arr[i][j] = abs((i - j))
      sum = 0
      for i in range(n):
          for j in range(n):
              sum += arr[i][j]
      return sum
source_cpp: int sum_matrix_element_absolute_difference_row_column_numbers(int n) {
    int arr [ n ] [ n ];
    for ( int i = 0;
    i < n;
    i ++ ) for ( int j = 0;
    j < n;
    j ++ ) arr [ i ] [ j ] = abs ( i - j );
    int sum = 0;
    for ( int i = 0;
    i < n;
    i ++ ) for ( int j = 0;
    j < n;
    j ++ ) sum += arr [ i ] [ j ];
    return sum;
  }