title: Number Indexes Equal Elements Given Range
signature: numberIndexesEqualElementsGivenRange :: [Integer] -> Integer -> Integer -> Integer -> Integer
  numberIndexesEqualElementsGivenRange a n l r = 
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 -> Integer -> Integer -> String
  driver a n l r expected = do
      if (validateSolution (PLACEHOLDER_FN_NAME a n l r) expected)
          then "PASSED"
      else "FAILED"
  
  main = do
      printf "TEST-0...%s\n" (driver ([4, 13, 13, 16, 16, 19, 39, 41, 48, 52, 57, 62, 65, 67, 76, 84, 88, 91, 95, 96, 97, 98]) (18) (12) (17) (0) )
  
      printf "TEST-1...%s\n" (driver ([62, 76, 86, -8, 84, -6, 72, 84, 6, -50, -18, -94, 54, 90, -74, -64, -26, -14, -32, 62, 10, 4, 70, -28, 8, 18, 4, -62, -76, 84, -78, -4, 84, 98, 58, -68, 42, -6, 34, -38, 52, -84, 78]) (32) (38) (23) (0) )
  
      printf "TEST-2...%s\n" (driver ([0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1]) (10) (6) (6) (0) )
  
      printf "TEST-3...%s\n" (driver ([11, 75, 98, 29, 62, 53, 48, 91, 86, 66, 48, 94]) (8) (6) (6) (0) )
  
      printf "TEST-4...%s\n" (driver ([-94, -84, -70, -70, -40, -40, -36, -24, 10, 48, 62, 74]) (11) (7) (8) (0) )
  
      printf "TEST-5...%s\n" (driver ([1, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0]) (36) (40) (37) (0) )
  
      printf "TEST-6...%s\n" (driver ([1, 2, 6, 7, 10, 11, 13, 19, 19, 25, 29, 30, 32, 34, 35, 45, 45, 46, 47, 48, 48, 53, 58, 61, 64, 65, 67, 75, 76, 81, 81, 84, 84, 85, 86, 94, 94, 96, 99]) (25) (19) (37) (4) )
  
      printf "TEST-7...%s\n" (driver ([-56, 42, -34, -12, -86, 82, -96, -66, 30, 16, -40, 72, 84, 94, -48, -30, 26, 50, 42, -44, -50, 22, -38, 8, 34, 94, 2, 16, -32, 18, -58, 12, -26, 28, -62]) (21) (30) (26) (0) )
  
      printf "TEST-8...%s\n" (driver ([0, 0, 0, 0, 1, 1, 1]) (4) (5) (5) (0) )
  
      printf "TEST-9...%s\n" (driver ([6, 29]) (1) (1) (1) (0) )
  
source_py: def number_indexes_equal_elements_given_range(a, n, l, r):
      count = 0
      for i in range(l, r):
          if (a[i] == a[(i + 1)]):
              count += 1
      return count
source_cpp: int number_indexes_equal_elements_given_range(vector<int> a, int n, int l, int r) {
    int count = 0;
    for ( int i = l;
    i < r;
    i ++ ) if ( a [ i ] == a [ i + 1 ] ) count += 1;
    return count;
  }