title: Check Reversing Sub Array Make Array Sorted 1
signature: class Solution {
  
      public bool CheckReversingSubArrayMakeArraySorted1(List<int> arr, int n) {
test_code: using System;
  using System.Numerics;
  using System.Diagnostics;
  using System.Collections.Generic;
  using System.Linq;
  using System.Text;
  using System.Security.Cryptography;
  using System.Web.UI;
  using System.Web.Script.Serialization;
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  namespace EvaluatePrediction {
      class TestRunner {
          public bool ValidateSolution(bool actual, bool expected){
              return new JavaScriptSerializer().Serialize(actual) == new JavaScriptSerializer().Serialize(expected);
          }
  
          public string driver(List<int> arr, int n, bool expected){
              try{
                PLACEHOLDER_CLS_NAME solution_cls = new PLACEHOLDER_CLS_NAME();
                bool pred_result = solution_cls.PLACEHOLDER_FN_NAME(arr, n); 
                if (ValidateSolution(
                      pred_result,
                      expected)){
                  return "PASSED";
                }
                return "FAILED";
              } 
              catch (Exception exception_obj)
              {
                return exception_obj.GetType().FullName;
              }
          }
          static void Main(string[] args) {
              TestRunner runner = new TestRunner();
              String result;
              result = runner.driver(
                  new List<int>{1, 2, 5, 4, 3}, 5, 
                  false
              );
              Console.WriteLine(string.Format(
                  "TEST-0...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{1, 2, 4, 5, 3}, 5, 
                  false
              );
              Console.WriteLine(string.Format(
                  "TEST-1...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{1, 1, 0, 0}, 4, 
                  true
              );
              Console.WriteLine(string.Format(
                  "TEST-2...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{5, 99, 40, 33, 61, 4, 64, 92, 28, 27, 21, 35, 40, 79, 10, 20, 76, 87, 80, 15, 57, 39, 96, 98, 99, 72, 72, 50, 61, 39, 35, 70, 27}, 32, 
                  true
              );
              Console.WriteLine(string.Format(
                  "TEST-3...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{-98, -92, -86, -58, -22, -12, 0, 26}, 6, 
                  true
              );
              Console.WriteLine(string.Format(
                  "TEST-4...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0}, 24, 
                  true
              );
              Console.WriteLine(string.Format(
                  "TEST-5...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{6, 10, 27, 30, 40, 47, 49, 55, 59, 60, 68, 82, 91}, 8, 
                  true
              );
              Console.WriteLine(string.Format(
                  "TEST-6...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{36, 56, -56, 94, 52, -82, 88, -62, 70, -94, 38, 10, -78, 66, -94, -72, 18, 96, -72, 88, -6, 48, 6, -88, 64, -96, -40, 8, 36, 36, -90, -68, -20, -76, 22, -92}, 30, 
                  true
              );
              Console.WriteLine(string.Format(
                  "TEST-7...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{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, 1, 1, 1, 1, 1, 1}, 31, 
                  true
              );
              Console.WriteLine(string.Format(
                  "TEST-8...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{2, 5, 42, 28, 47, 26, 88, 16, 30, 30, 36, 49, 21, 95, 99, 21, 41, 52, 57, 39, 69, 2, 42, 22, 55, 92, 64, 27, 95, 71, 19, 38, 40, 65, 7, 21, 29, 38, 13, 11, 41, 54, 38, 40, 35, 51, 88}, 46, 
                  true
              );
              Console.WriteLine(string.Format(
                  "TEST-9...{0}",
                  result)
              );
          }
      }
  }
  
source_py: def check_reversing_sub_array_make_array_sorted_1(arr, n):
      if (n == 1):
          return True
      i = 1
      for i in range(1, n):
          if (arr[(i - 1)] < arr[i]):
              if (i == n):
                  return True
      j = i
      while (arr[j] < arr[(j - 1)]):
          if ((i > 1) and (arr[j] < arr[(i - 2)])):
              return False
          j += 1
      if (j == n):
          return True
      k = j
      if (arr[k] < arr[(i - 1)]):
          return False
      while ((k > 1) and (k < n)):
          if (arr[k] < arr[(k - 1)]):
              return False
          k += 1
      return True
source_cpp: bool check_reversing_sub_array_make_array_sorted_1(vector<int> arr, int n) {
    if ( n == 1 ) return true;
    int i;
    for ( i = 1;
    i < n && arr [ i - 1 ] < arr [ i ];
    i ++ );
    if ( i == n ) return true;
    int j = i;
    while ( arr [ j ] < arr [ j - 1 ] ) {
      if ( i > 1 && arr [ j ] < arr [ i - 2 ] ) return false;
      j ++;
    }
    if ( j == n ) return true;
    int k = j;
    if ( arr [ k ] < arr [ i - 1 ] ) return false;
    while ( k > 1 && k < n ) {
      if ( arr [ k ] < arr [ k - 1 ] ) return false;
      k ++;
    }
    return true;
  }