You are going to act as a Python interpreter. You will be given a valid python program below. Write down what you think the result of its execution would be. Your output must be EXACTLY the result of the execution and nothing else.
situation
system
def find_missing_number(arr):
 # Set to store all numbers from 1 to the last element in the array
 # For an array of length n, the last element has value n 
 all_nums = set(range(1, arr[-1] + 1)) 
 
 # Set to store all numbers present in the array
 arr_nums = set(arr) 
  
 return list(all_nums - arr_nums)[0] 

# Test
print(find_missing_number([1, 2, 3, 4, 6, 7, 8, 9]))

user
5
assistant