title: Maximum Consecutive Numbers Present Array
signature: class Solution {
  
      public Integer maximumConsecutiveNumbersPresentArray(ArrayList<Integer> arr, Integer n) {
source_py: def maximum_consecutive_numbers_present_array(arr, n):
      S = set()
      for i in range(n):
          S.add(arr[i])
      ans = 0
      for i in range(n):
          if S.__contains__(arr[i]):
              j = arr[i]
              while S.__contains__(j):
                  j += 1
              ans = max(ans, (j - arr[i]))
      return ans
source_cpp: int maximum_consecutive_numbers_present_array(vector<int> arr, int n) {
    unordered_set < int > S;
    for ( int i = 0;
    i < n;
    i ++ ) S . insert ( arr [ i ] );
    int ans = 0;
    for ( int i = 0;
    i < n;
    i ++ ) {
      if ( S . find ( arr [ i ] - 1 ) == S . end ( ) ) {
        int j = arr [ i ];
        while ( S . find ( j ) != S . end ( ) ) j ++;
        ans = max ( ans, j - arr [ i ] );
      }
    }
    return ans;
  }
question_info.extension: java
question_info.entry_fn_name: maximumConsecutiveNumbersPresentArray
question_info.entry_cls_name: Solution
question_info.test_list: [{"idx": 0, "outputs": 2, "inputs": {"arr": [3, 5, 9, 24, 28, 31, 49, 54, 67, 85, 86, 94, 97, 97], "n": 11}}, {"idx": 1, "outputs": 1, "inputs": {"arr": [-34, 16, -80, -10, 80, 2, 50, -74, -76, 36, -84, -24, 74, -54, -22, 46, 80, 58, -8, 70, 24, -88, 52, 62, 30, 42, 48, 16, 78, -82, 64, -36, 84, -72], "n": 29}}, {"idx": 2, "outputs": 2, "inputs": {"arr": [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], "n": 13}}, {"idx": 3, "outputs": 2, "inputs": {"arr": [49, 61, 68, 4, 90, 89, 71, 74, 45, 61, 35, 41, 59], "n": 11}}, {"idx": 4, "outputs": 1, "inputs": {"arr": [-42, -8, 28, 56, 80, 96], "n": 4}}, {"idx": 5, "outputs": 2, "inputs": {"arr": [1, 0, 1, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1], "n": 17}}, {"idx": 6, "outputs": 2, "inputs": {"arr": [3, 4, 6, 6, 13, 27, 27, 29, 32, 36, 46, 50, 52, 65, 69, 70, 71, 83, 87, 91], "n": 10}}, {"idx": 7, "outputs": 1, "inputs": {"arr": [64, -76, 28, 6, 56, 18, 32, -50, -20, 18, -26, -90, 32, 50, -18, 98, 84, 40, 50, 88, -70, -6, -24, -44, -96, -58, 48, -78, -14], "n": 15}}, {"idx": 8, "outputs": 1, "inputs": {"arr": [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], "n": 15}}, {"idx": 9, "outputs": 3, "inputs": {"arr": [50, 48, 61, 87, 7, 78, 93, 44, 16, 88, 98, 15, 73, 93, 43, 46, 42, 34, 1, 35, 79, 35, 84, 60, 18, 79, 17, 4, 78, 1, 20, 64], "n": 25}}]
question_info.test_code: import static java.util.Map.entry;  
  import java.util.*;
  import java.lang.*;
  // TESTING CODE 
  // ============================================
  class QuestionEvaluator {
      public static String validateSolution(ArrayList<Integer> arr, Integer n, Integer expected){
          try{
              Driver driver = new Driver();
              if (driver.run(arr, n,expected)){
                  return "PASSED";
              }
              return "FAILED";
              
          } catch (Exception exception_obj){
              return exception_obj.getClass().getSimpleName();
          }
  
      }
      public static void main(String[] args) {
          String result;
          result = validateSolution(new ArrayList<>(Arrays.asList(3, 5, 9, 24, 28, 31, 49, 54, 67, 85, 86, 94, 97, 97)), 11, 2);
          System.out.println(String.format("%s%s","TEST-0...",result));    
      
          result = validateSolution(new ArrayList<>(Arrays.asList(-34, 16, -80, -10, 80, 2, 50, -74, -76, 36, -84, -24, 74, -54, -22, 46, 80, 58, -8, 70, 24, -88, 52, 62, 30, 42, 48, 16, 78, -82, 64, -36, 84, -72)), 29, 1);
          System.out.println(String.format("%s%s","TEST-1...",result));    
      
          result = validateSolution(new ArrayList<>(Arrays.asList(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1)), 13, 2);
          System.out.println(String.format("%s%s","TEST-2...",result));    
      
          result = validateSolution(new ArrayList<>(Arrays.asList(49, 61, 68, 4, 90, 89, 71, 74, 45, 61, 35, 41, 59)), 11, 2);
          System.out.println(String.format("%s%s","TEST-3...",result));    
      
          result = validateSolution(new ArrayList<>(Arrays.asList(-42, -8, 28, 56, 80, 96)), 4, 1);
          System.out.println(String.format("%s%s","TEST-4...",result));    
      
          result = validateSolution(new ArrayList<>(Arrays.asList(1, 0, 1, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1)), 17, 2);
          System.out.println(String.format("%s%s","TEST-5...",result));    
      
          result = validateSolution(new ArrayList<>(Arrays.asList(3, 4, 6, 6, 13, 27, 27, 29, 32, 36, 46, 50, 52, 65, 69, 70, 71, 83, 87, 91)), 10, 2);
          System.out.println(String.format("%s%s","TEST-6...",result));    
      
          result = validateSolution(new ArrayList<>(Arrays.asList(64, -76, 28, 6, 56, 18, 32, -50, -20, 18, -26, -90, 32, 50, -18, 98, 84, 40, 50, 88, -70, -6, -24, -44, -96, -58, 48, -78, -14)), 15, 1);
          System.out.println(String.format("%s%s","TEST-7...",result));    
      
          result = validateSolution(new ArrayList<>(Arrays.asList(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)), 15, 1);
          System.out.println(String.format("%s%s","TEST-8...",result));    
      
          result = validateSolution(new ArrayList<>(Arrays.asList(50, 48, 61, 87, 7, 78, 93, 44, 16, 88, 98, 15, 73, 93, 43, 46, 42, 34, 1, 35, 79, 35, 84, 60, 18, 79, 17, 4, 78, 1, 20, 64)), 25, 3);
          System.out.println(String.format("%s%s","TEST-9...",result));    
      
      }
  }
  
  class Driver{
      public boolean run(ArrayList<Integer> arr, Integer n, Integer expected){
  
          PLACEHOLDER_CLS_NAME sol = new PLACEHOLDER_CLS_NAME();
          return validateSolution(sol.PLACEHOLDER_FN_NAME(arr, n),expected);
      }
      
      public boolean validateSolution(Integer actual, Integer expected){
          return actual.equals(expected);
      }
  }
  
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
question_info.test_case_ids: 0 1 2 3 4 5 6 7 8 9
question_info.commands: java __FILENAME__