title: Maximum Area Rectangle Picking Four Sides Array 1
signature: function maximumAreaRectanglePickingFourSidesArray1($arr, $n) {
test_code: <?php
  
  
  // SOLUTION CODE 
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  function validateSolution($actual, $expected){
      return serialize($actual) == serialize($expected);
  }
  
  function driver($arr, $n, $expected){
      try{
        if (validateSolution(PLACEHOLDER_FN_NAME($arr, $n), $expected)){
          return "PASSED";
        }
        return "FAILED";
      }
      catch (Exception $exception_obj) {
        return get_class($exception_obj);
      }
  }
  
  function main(){
      printf("TEST-0...%s\n",driver(
        array(4, 6, 7, 8, 12, 13, 14, 15, 18, 18, 19, 19, 26, 26, 32, 32, 33, 34, 34, 36, 41, 43, 47, 47, 51, 51, 52, 53, 55, 56, 57, 60, 61, 71, 74, 75, 76, 77, 79, 87, 87, 87, 90, 95, 98, 99), 37, 
        2397));
      
      printf("TEST-1...%s\n",driver(
        array(-64, -72, 6, -62, 54, 14, 28, 60, -96, 14, -32, -2, 80, 8, -56, 68, 86, 64, 86, -12, 82), 12, 
        0));
      
      printf("TEST-2...%s\n",driver(
        array(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), 27, 
        1));
      
      printf("TEST-3...%s\n",driver(
        array(99, 7, 14, 50, 94, 24, 79, 13, 19, 29, 22, 2, 77, 36, 38, 18, 51, 15, 99, 52, 17, 77, 22, 54), 15, 
        0));
      
      printf("TEST-4...%s\n",driver(
        array(-96, -92, -86, -84, -84, -80, -70, -70, -68, -64, -64, -48, -46, -24, -22, -20, -8, -8, 0, 0, 4, 8, 8, 22, 28, 36, 46, 50, 52, 54, 60, 62, 66, 70, 80, 84, 86, 94, 96, 96), 25, 
        0));
      
      printf("TEST-5...%s\n",driver(
        array(1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1), 12, 
        1));
      
      printf("TEST-6...%s\n",driver(
        array(98), 0, 
        0));
      
      printf("TEST-7...%s\n",driver(
        array(-88, -24, 8, 20, -46, 60, 24, 26, 98, 82, -30, 16, 22, -28, 84, 12, 34, 14, -18, -38, -94, -24, 6, 4, -52, -48, 84), 21, 
        0));
      
      printf("TEST-8...%s\n",driver(
        array(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, 1), 21, 
        0));
      
      printf("TEST-9...%s\n",driver(
        array(6, 30, 47, 97, 20, 16, 68, 34, 1, 77, 48, 8, 22, 68), 8, 
        0));
      
  }
  
  main();
  ?>
source_py: def maximum_area_rectangle_picking_four_sides_array_1(arr, n):
      s = []
      first = 0
      second = 0
      for i in range(n):
          if (arr[i] not in s):
              s.append(arr[i])
              continue
          if (arr[i] > first):
              second = first
              first = arr[i]
          elif (arr[i] > second):
              second = arr[i]
      return (first * second)
source_cpp: int maximum_area_rectangle_picking_four_sides_array_1(vector<int> arr, int n) {
    unordered_set < int > s;
    int first = 0, second = 0;
    for ( int i = 0;
    i < n;
    i ++ ) {
      if ( s . find ( arr [ i ] ) == s . end ( ) ) {
        s . insert ( arr [ i ] );
        continue;
      }
      if ( arr [ i ] > first ) {
        second = first;
        first = arr [ i ];
      }
      else if ( arr [ i ] > second ) second = arr [ i ];
    }
    return ( first * second );
  }