title: Count Subarrays Total Distinct Elements Original Array
signature: def countSubarraysTotalDistinctElementsOriginalArray(arr: List[Int], n: Int) = {
test_code: import scala.collection.mutable.HashMap
  import scala.collection.immutable.HashSet
  
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  
  // TESTING CODE 
  // ============================================
  def validateSolution(actual: Int , expected: Int): Boolean = {
      actual.toString == expected.toString
  }
  
  def driver(arr: List[Int], n: Int, expected: Int): String = {
      try {
          if (validateSolution(PLACEHOLDER_FN_NAME(arr, n),expected)) {
              "PASSED"
          } else{
              "FAILED"
          }
      }catch{
          case e: Exception => {e.getClass.getName}
      }
  
  }
  object QuestionEvaluator extends App {
  
      println(s"TEST-0...${driver(
        List(13, 39, 49, 52, 53, 69, 72, 79, 83, 96), 5, 
        1    
      )}")   
  
  
      println(s"TEST-1...${driver(
        List(-98, -98, 22, -10, -28, 0, 56, 72, 36, 88, 96, 22, 90, 74, -60, -64, 0, 2, -42, 0, 94, -82, -74), 20, 
        4    
      )}")   
  
  
      println(s"TEST-2...${driver(
        List(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1), 26, 
        160    
      )}")   
  
  
      println(s"TEST-3...${driver(
        List(35, 23, 41, 58, 66, 92, 3, 33, 78, 70, 80, 86, 21, 21, 74, 19), 12, 
        1    
      )}")   
  
  
      println(s"TEST-4...${driver(
        List(-98, -80, -52, -10, 4, 76), 3, 
        1    
      )}")   
  
  
      println(s"TEST-5...${driver(
        List(1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 1), 36, 
        609    
      )}")   
  
  
      println(s"TEST-6...${driver(
        List(2, 7, 10, 17, 26, 36, 37, 85, 87, 88), 8, 
        1    
      )}")   
  
  
      println(s"TEST-7...${driver(
        List(64, -2, -94, -84, -48, 86), 5, 
        1    
      )}")   
  
  
      println(s"TEST-8...${driver(
        List(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1), 20, 
        91    
      )}")   
  
  
      println(s"TEST-9...${driver(
        List(91, 49, 94, 81, 64, 5, 13, 70, 82, 9, 80, 82), 9, 
        1    
      )}")   
  
  }
  
source_py: def count_subarrays_total_distinct_elements_original_array(arr, n):
      vis = dict()
      for i in range(n):
          vis[arr[i]] = 1
      k = len(vis)
      vid = dict()
      ans = 0
      right = 0
      window = 0
      for left in range(n):
          while ((right < n) and (window < k)):
              if (arr[right] in vid.keys()):
                  vid[arr[right]] += 1
              else:
                  vid[arr[right]] = 1
              if (vid[arr[right]] == 1):
                  window += 1
              right += 1
          if (window == k):
              ans += ((n - right) + 1)
          vid[arr[left]] -= 1
          if (vid[arr[left]] == 0):
              window -= 1
      return ans
source_cpp: int count_subarrays_total_distinct_elements_original_array(vector<int> arr, int n) {
    unordered_map < int, int > vis;
    for ( int i = 0;
    i < n;
    ++ i ) vis [ arr [ i ] ] = 1;
    int k = vis . size ( );
    vis . clear ( );
    int ans = 0, right = 0, window = 0;
    for ( int left = 0;
    left < n;
    ++ left ) {
      while ( right < n && window < k ) {
        ++ vis [ arr [ right ] ];
        if ( vis [ arr [ right ] ] == 1 ) ++ window;
        ++ right;
      }
      if ( window == k ) ans += ( n - right + 1 );
      -- vis [ arr [ left ] ];
      if ( vis [ arr [ left ] ] == 0 ) -- window;
    }
    return ans;
  }