title: Count Index Pairs Equal Elements Array
signature: countIndexPairsEqualElementsArray :: [Integer] -> Integer -> Integer
  countIndexPairsEqualElementsArray arr n = 
test_code: import Text.Printf
  import Control.Exception (catch, SomeException)
  import Data.Typeable
  import qualified Data.List as List
  import qualified Data.Map as Map
  import qualified Data.Set as Set
  
  -- SOLUTION CODE
  -- ============================================
  
  PLACEHOLDER_CODE_BODY
  
  -- TESTING CODE 
  -- ============================================
  validateSolution :: Integer -> Integer -> Bool
  validateSolution actual expected = do
      actual == expected
  
  
  driver :: [Integer] -> Integer -> Integer -> String
  driver arr n expected = do
      if (validateSolution (PLACEHOLDER_FN_NAME arr n) expected)
          then "PASSED"
      else "FAILED"
  
  main = do
      printf "TEST-0...%s\n" (driver ([4, 6, 9, 16, 16, 21, 36, 41, 58, 60, 62, 73, 77, 81, 95]) (12) (1) )
  
      printf "TEST-1...%s\n" (driver ([-86, -72, -26, -34, 18, -62, -66]) (3) (0) )
  
      printf "TEST-2...%s\n" (driver ([1]) (0) (0) )
  
      printf "TEST-3...%s\n" (driver ([16]) (0) (0) )
  
      printf "TEST-4...%s\n" (driver ([-88, -80, -72, -68, -64, -26, 4, 14, 16, 22, 30, 32, 60, 74, 82]) (11) (0) )
  
      printf "TEST-5...%s\n" (driver ([0, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1]) (9) (16) )
  
      printf "TEST-6...%s\n" (driver ([3, 9, 10, 12, 17, 23, 27, 29, 42, 44, 59, 61, 71, 76, 78, 82, 84, 84, 89, 90, 93, 93, 97, 97]) (15) (0) )
  
      printf "TEST-7...%s\n" (driver ([68, -40, -46, -20, -64, 90]) (5) (0) )
  
      printf "TEST-8...%s\n" (driver ([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]) (15) (61) )
  
      printf "TEST-9...%s\n" (driver ([99, 17, 94, 43, 97, 17, 11, 58, 75, 94, 37, 22, 54, 31, 41, 4, 55, 69, 92, 80, 45, 97, 16, 33, 36, 17, 43, 82, 81, 64, 22, 65, 85, 44, 47, 14]) (23) (3) )
  
source_py: def count_index_pairs_equal_elements_array(arr, n):
      ans = 0
      for i in range(0, n):
          for j in range((i + 1), n):
              if (arr[i] == arr[j]):
                  ans += 1
      return ans
source_cpp: int count_index_pairs_equal_elements_array(vector<int> arr, int n) {
    int ans = 0;
    for ( int i = 0;
    i < n;
    i ++ ) for ( int j = i + 1;
    j < n;
    j ++ ) if ( arr [ i ] == arr [ j ] ) ans ++;
    return ans;
  }