title: Find Pair With Greatest Product In Array
signature: function findPairWithGreatestProductInArray(arr: Array<number>, n: number): number {
source_py: def find_pair_with_greatest_product_in_array(arr, n):
      result = (- 1)
      for i in range(n):
          for j in range((n - 1)):
              for k in range((j + 1), n):
                  if ((arr[j] * arr[k]) == arr[i]):
                      result = max(result, arr[i])
      return result
source_cpp: int find_pair_with_greatest_product_in_array(vector<int> arr, int n) {
    int result = - 1;
    for ( int i = 0;
    i < n;
    i ++ ) for ( int j = 0;
    j < n - 1;
    j ++ ) for ( int k = j + 1;
    k < n;
    k ++ ) if ( arr [ j ] * arr [ k ] == arr [ i ] ) result = max ( result, arr [ i ] );
    return result;
  }
question_info.test_list: [{"idx": 0, "outputs": -1, "inputs": {"arr": [4, 78, 84], "n": 2}}, {"idx": 1, "outputs": 76, "inputs": {"arr": [-54, 64, 60, 14, 18, -68, -54, -58, 38, -72, -84, 46, 74, 76, 28, -2, 54, 24, 18, -74, -78, 14, -38, -70, 26, -54, -36, -96, -12, 8, 62, -42, -84, 10, -6, 36, -72, 10, 10, -20, 16, 92, -64, -34, 74, -98, 18], "n": 26}}, {"idx": 2, "outputs": 1, "inputs": {"arr": [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], "n": 22}}, {"idx": 3, "outputs": -1, "inputs": {"arr": [39, 49, 94, 80, 48, 34, 63, 82, 47, 51, 60, 68, 79, 23, 97, 22, 54, 53, 40, 2, 25], "n": 10}}, {"idx": 4, "outputs": -1, "inputs": {"arr": [-90, -52, -10, 12, 72], "n": 3}}, {"idx": 5, "outputs": 0, "inputs": {"arr": [1, 0, 0], "n": 2}}, {"idx": 6, "outputs": 60, "inputs": {"arr": [2, 9, 11, 14, 16, 17, 17, 18, 19, 21, 24, 25, 28, 29, 30, 33, 33, 39, 41, 41, 43, 46, 50, 51, 60, 62, 67, 80, 84, 86, 91, 92, 97], "n": 27}}, {"idx": 7, "outputs": -1, "inputs": {"arr": [4], "n": 0}}, {"idx": 8, "outputs": 1, "inputs": {"arr": [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], "n": 16}}, {"idx": 9, "outputs": 40, "inputs": {"arr": [52, 8, 31, 92, 20, 18, 34, 5, 15, 8, 73, 20, 40, 61, 80, 51, 95, 73, 38, 30, 21, 69, 52, 38, 68, 77], "n": 22}}]
question_info.entry_cls_name: Solution
question_info.test_code: 
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  function convertToString(value: any): string{
      return JSON.stringify(value, function (key, val) {
          if (val instanceof Set) {
              return Array.from(val);
          } return val;});
  }
  
  function validateSolution(actual: number, expected: number): boolean {
      return convertToString(actual) === convertToString(expected);
  }
  
  function driver(arr: Array<number>, n: number, expected:number): string {
      try{
          if (validateSolution(PLACEHOLDER_FN_NAME(arr, n),expected)){
              return "PASSED";
          }
          return "FAILED";
      } catch (error) {
        return error.name;
      }
      
  }
      
  function main(){
    let result = '';
    result = driver([4, 78, 84], 2, -1);
    console.log(`TEST-0...${result}`);
  
    result = driver([-54, 64, 60, 14, 18, -68, -54, -58, 38, -72, -84, 46, 74, 76, 28, -2, 54, 24, 18, -74, -78, 14, -38, -70, 26, -54, -36, -96, -12, 8, 62, -42, -84, 10, -6, 36, -72, 10, 10, -20, 16, 92, -64, -34, 74, -98, 18], 26, 76);
    console.log(`TEST-1...${result}`);
  
    result = driver([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], 22, 1);
    console.log(`TEST-2...${result}`);
  
    result = driver([39, 49, 94, 80, 48, 34, 63, 82, 47, 51, 60, 68, 79, 23, 97, 22, 54, 53, 40, 2, 25], 10, -1);
    console.log(`TEST-3...${result}`);
  
    result = driver([-90, -52, -10, 12, 72], 3, -1);
    console.log(`TEST-4...${result}`);
  
    result = driver([1, 0, 0], 2, 0);
    console.log(`TEST-5...${result}`);
  
    result = driver([2, 9, 11, 14, 16, 17, 17, 18, 19, 21, 24, 25, 28, 29, 30, 33, 33, 39, 41, 41, 43, 46, 50, 51, 60, 62, 67, 80, 84, 86, 91, 92, 97], 27, 60);
    console.log(`TEST-6...${result}`);
  
    result = driver([4], 0, -1);
    console.log(`TEST-7...${result}`);
  
    result = driver([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], 16, 1);
    console.log(`TEST-8...${result}`);
  
    result = driver([52, 8, 31, 92, 20, 18, 34, 5, 15, 8, 73, 20, 40, 61, 80, 51, 95, 73, 38, 30, 21, 69, 52, 38, 68, 77], 22, 40);
    console.log(`TEST-9...${result}`);
  
  };
  
  main();
question_info.extension: ts
question_info.entry_fn_name: findPairWithGreatestProductInArray
question_info.test_case_ids: 0 1 2 3 4 5 6 7 8 9
question_info.commands: tsc --target es2020 --lib es5,dom,es2015,es2020 __FILENAME__
question_info.commands: node __FILENAME__.js