title: K Th Distinct Or Non Repeating Element In An Array
signature: fun kThDistinctOrNonRepeatingElementInAnArray(arr: ArrayList<Int>, n: Int, k: Int): Int {
test_code: package main
  
  import kotlin.text.*
  import kotlin.math.*
  
  
  // SOLUTION CODE
  // ===================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE
  // ===================================
  fun validateSolution(actual:Int, expected:Int):Boolean{
    return actual.equals(expected)
  }
  fun driver(arr: ArrayList<Int>, n: Int, k: Int, expected:Int):String {
      try{
        if (validateSolution(PLACEHOLDER_FN_NAME(arr, n, k), expected)) {
                return "PASSED"
        }
        return "FAILED"
      } catch (e: Exception){
        return e::class.simpleName as String
      }
  
  }
  
  fun main() {
      var result: String = ""
      result = driver(arrayListOf(2, 3, 8, 18, 20, 33, 53, 56, 60, 71, 76, 80, 81, 87, 88, 89, 92, 95), 16, 16, 89)
      println("TEST-0...${result}")
      
      result = driver(arrayListOf(-78, 6, 32, 52, -12, -32, 22, -40, -82, 24, 30, 10, -40), 8, 6, -32)
      println("TEST-1...${result}")
      
      result = driver(arrayListOf(0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1), 7, 5, -1)
      println("TEST-2...${result}")
      
      result = driver(arrayListOf(3, 28, 55, 21, 42, 60, 96, 83, 98, 75, 29, 73, 51, 21, 27, 65, 19, 47, 12, 81, 19, 94, 50, 43, 21, 32, 52, 44, 52, 91, 49, 59, 52, 10, 75, 86, 46, 43, 3, 49, 70, 60, 77, 99, 27, 63), 40, 39, -1)
      println("TEST-3...${result}")
      
      result = driver(arrayListOf(-96, -90, -76, -44, -16, -8, 0, 0, 2, 2, 8, 14, 16, 18, 18, 20, 20, 28, 34, 44, 68, 74, 84, 90), 23, 12, 44)
      println("TEST-4...${result}")
      
      result = driver(arrayListOf(0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0), 10, 8, -1)
      println("TEST-5...${result}")
      
      result = driver(arrayListOf(3, 4, 5, 8, 9, 15, 26, 26, 26, 35, 39, 40, 42, 43, 45, 45, 48, 52, 54, 56, 57, 67, 74, 77, 79, 80, 81, 86, 87, 92, 95, 97), 26, 24, -1)
      println("TEST-6...${result}")
      
      result = driver(arrayListOf(-76, -24, -12, 66, -40, 26, 72, 46, -56, 58, -68, 2, -82), 6, 10, -1)
      println("TEST-7...${result}")
      
      result = driver(arrayListOf(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, 1, 1, 1, 1, 1, 1, 1, 1), 27, 17, -1)
      println("TEST-8...${result}")
      
      result = driver(arrayListOf(29, 83, 32, 75, 5, 22, 68, 64, 36, 18, 7, 63, 16, 42, 77, 61, 1, 26, 12, 41, 67, 85, 85, 35, 94, 18, 14, 65, 8, 55, 44, 34, 48, 23, 8, 27, 86, 2, 51, 91), 28, 24, 65)
      println("TEST-9...${result}")
      
          
  }
  
  main()
source_py: def k_th_distinct_or_non_repeating_element_in_an_array(arr, n, k):
      dist_count = 0
      for i in range(n):
          j = 0
          while (j < n):
              if ((i != j) and (arr[j] == arr[i])):
                  break
              j += 1
          if (j == n):
              dist_count += 1
          if (dist_count == k):
              return arr[i]
      return (- 1)
source_cpp: int k_th_distinct_or_non_repeating_element_in_an_array(vector<int> arr, int n, int k) {
    int dist_count = 0;
    for ( int i = 0;
    i < n;
    i ++ ) {
      int j;
      for ( j = 0;
      j < n;
      j ++ ) if ( i != j && arr [ j ] == arr [ i ] ) break;
      if ( j == n ) dist_count ++;
      if ( dist_count == k ) return arr [ i ];
    }
    return - 1;
  }