title: K Th Distinct Or Non Repeating Element In An Array 1
signature: pub fn k_th_distinct_or_non_repeating_element_in_an_array_1(arr: Vec<i32>, size: i32, kthindex: i32) -> i32 {
test_code: use std::collections::HashMap;
  use std::collections::HashSet;
  use std::cmp::*;
  use std::collections::*;
  use std::fmt::*; 
  
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  pub fn validate_solution(actual: i32, expected: i32)->bool{
  return actual==expected
  }
  pub fn driver(arr: Vec<i32>, size: i32, kthindex: i32, expected: i32)->String{
      if validate_solution(PLACEHOLDER_FN_NAME(arr, size, kthindex), expected) {
        return "PASSED".to_string();
      };
      return "FAILED".to_string();
  
  }
  
  fn main() {
      println!("TEST-0...{}", driver(
        Vec::from([17, 25, 27, 27, 73, 91]), 5, 3, 
        73
      ));
      
      println!("TEST-1...{}", driver(
        Vec::from([-86, -74, -88, 28, -32, 20, -34, 32]), 5, 6, 
        -1
      ));
      
      println!("TEST-2...{}", driver(
        Vec::from([0, 0, 0, 0, 0, 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, 1, 1, 1]), 33, 32, 
        -1
      ));
      
      println!("TEST-3...{}", driver(
        Vec::from([5, 11, 36, 27, 6, 24, 58, 44, 14, 68]), 7, 5, 
        6
      ));
      
      println!("TEST-4...{}", driver(
        Vec::from([-98, -98, -94, -92, -86, -86, -70, -66, -64, -64, -58, -52, -46, -44, -44, -38, -38, -28, -24, -12, -10, -4, -2, 2, 8, 10, 12, 20, 22, 26, 26, 36, 42, 52, 54, 60, 60, 68, 82, 82, 92, 98]), 27, 27, 
        -1
      ));
      
      println!("TEST-5...{}", driver(
        Vec::from([0, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 1]), 27, 20, 
        -1
      ));
      
      println!("TEST-6...{}", driver(
        Vec::from([3, 8, 9, 10, 10, 13, 14, 16, 18, 23, 24, 25, 27, 28, 30, 33, 36, 39, 42, 42, 44, 45, 45, 48, 52, 52, 55, 55, 59, 59, 59, 60, 61, 61, 66, 66, 67, 68, 71, 72, 75, 76, 79, 80, 94, 94]), 44, 26, 
        79
      ));
      
      println!("TEST-7...{}", driver(
        Vec::from([-12, 56, -48, 52, -96, -84, 32, -12, -6, 82, 70, 18, 66, -6, -22, -46, -54, 18, -14, -32, 68, 82, -44, -42, 10, 56, 8, -56, 24, 20, -38, 30, -52, -66, 82, -64, 68, -82, 52, -88, -34, -26, 94, 58, -4, -84, -60]), 37, 46, 
        -1
      ));
      
      println!("TEST-8...{}", driver(
        Vec::from([0, 0, 0, 0, 0, 0, 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, 1, 1, 1, 1]), 22, 21, 
        -1
      ));
      
      println!("TEST-9...{}", driver(
        Vec::from([1, 23, 75, 84, 28, 34, 15, 13, 51, 69, 94, 45, 38, 38]), 13, 12, 
        45
      ));
      
  }
source_py: def k_th_distinct_or_non_repeating_element_in_an_array_1(arr, size, KthIndex):
      dict = {
          
      }
      vect = []
      for i in range(size):
          if (arr[i] in dict):
              dict[arr[i]] = (dict[arr[i]] + 1)
          else:
              dict[arr[i]] = 1
      for i in range(size):
          if (dict[arr[i]] > 1):
              continue
          else:
              KthIndex = (KthIndex - 1)
          if (KthIndex == 0):
              return arr[i]
      return (- 1)
source_cpp: int k_th_distinct_or_non_repeating_element_in_an_array_1(vector<int> arr, int n, int k) {
    unordered_map < int, int > h;
    for ( int i = 0;
    i < n;
    i ++ ) h [ arr [ i ] ] ++;
    if ( h . size ( ) < k ) return - 1;
    int dist_count = 0;
    for ( int i = 0;
    i < n;
    i ++ ) {
      if ( h [ arr [ i ] ] == 1 ) dist_count ++;
      if ( dist_count == k ) return arr [ i ];
    }
    return - 1;
  }