title: Find Index Of An Extra Element Present In One Sorted Array
signature: findIndexOfAnExtraElementPresentInOneSortedArray :: [Integer] -> [Integer] -> Integer -> Integer
  findIndexOfAnExtraElementPresentInOneSortedArray arr1 arr2 n = 
source_py: def find_index_of_an_extra_element_present_in_one_sorted_array(arr1, arr2, n):
      for i in range(0, n):
          if (arr1[i] != arr2[i]):
              return i
      return n
source_cpp: int find_index_of_an_extra_element_present_in_one_sorted_array(vector<int> arr1, vector<int> arr2, int n) {
    for ( int i = 0;
    i < n;
    i ++ ) if ( arr1 [ i ] != arr2 [ i ] ) return i;
    return n;
  }