title: Smallest Sum Contiguous Subarray
signature: class Solution {
  
      public int SmallestSumContiguousSubarray(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(int actual, int expected){
              return new JavaScriptSerializer().Serialize(actual) == new JavaScriptSerializer().Serialize(expected);
          }
  
          public string driver(List<int> arr, int n, int expected){
              try{
                PLACEHOLDER_CLS_NAME solution_cls = new PLACEHOLDER_CLS_NAME();
                int 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>{2, 9, 13, 14, 15, 18, 19, 19, 25, 26, 29, 29, 29, 30, 31, 36, 37, 37, 38, 39, 39, 40, 40, 42, 42, 46, 50, 53, 58, 60, 62, 64, 65, 67, 68, 69, 72, 77, 78, 83, 85, 89, 90, 93, 95, 95, 97}, 24, 
                  2
              );
              Console.WriteLine(string.Format(
                  "TEST-0...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{14, -58, 8, 78, -26, -20, -60, 42, -64, -12}, 6, 
                  -58
              );
              Console.WriteLine(string.Format(
                  "TEST-1...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 8, 
                  0
              );
              Console.WriteLine(string.Format(
                  "TEST-2...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{44, 88, 20, 47, 69, 42, 26, 49, 71, 91, 18, 95, 9, 66, 60, 37, 47, 29, 98, 63, 15, 9, 80, 66, 1, 9, 57, 56, 20, 2, 1}, 26, 
                  1
              );
              Console.WriteLine(string.Format(
                  "TEST-3...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{-78, -64, -62, -60, -52, 4, 8, 46, 72, 74}, 8, 
                  -316
              );
              Console.WriteLine(string.Format(
                  "TEST-4...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1}, 11, 
                  0
              );
              Console.WriteLine(string.Format(
                  "TEST-5...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{3, 7, 16, 17, 23, 23, 23, 28, 29, 30, 34, 38, 40, 41, 43, 43, 44, 46, 51, 51, 51, 55, 57, 58, 61, 62, 66, 66, 67, 69, 70, 73, 75, 77, 79, 80, 85, 85, 87, 87, 93, 96}, 38, 
                  3
              );
              Console.WriteLine(string.Format(
                  "TEST-6...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{80, 22, 38, 26, 62, -48, -48, 46, -54, 4, 76, 46, 48, 40, -92, -98, -88, 12, -42, -94, 76, -16, -82, 62, 18, -24}, 22, 
                  -402
              );
              Console.WriteLine(string.Format(
                  "TEST-7...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1}, 13, 
                  0
              );
              Console.WriteLine(string.Format(
                  "TEST-8...{0}",
                  result)
              );result = runner.driver(
                  new List<int>{85, 44, 1, 97, 50, 74, 62, 90, 3, 78, 8, 48, 96, 41, 36, 91, 57, 97, 85, 90, 78, 43, 28, 92, 85, 59, 29, 38, 34, 65, 20, 26, 27, 23, 71, 22, 47, 99, 68, 93, 67, 66, 69, 82, 98, 15, 44, 51, 65}, 45, 
                  1
              );
              Console.WriteLine(string.Format(
                  "TEST-9...{0}",
                  result)
              );
          }
      }
  }
  
source_py: def smallest_sum_contiguous_subarray(arr, n):
      min_ending_here = sys.maxsize
      min_so_far = sys.maxsize
      for i in range(n):
          if (min_ending_here > 0):
              min_ending_here = arr[i]
          else:
              min_ending_here += arr[i]
          min_so_far = min(min_so_far, min_ending_here)
      return min_so_far
source_cpp: int smallest_sum_contiguous_subarray(vector<int> arr, int n) {
    int min_ending_here = INT_MAX;
    int min_so_far = INT_MAX;
    for ( int i = 0;
    i < n;
    i ++ ) {
      if ( min_ending_here > 0 ) min_ending_here = arr [ i ];
      else min_ending_here += arr [ i ];
      min_so_far = min ( min_so_far, min_ending_here );
    }
    return min_so_far;
  }