Question

Variable trials refers to a list where each list item is another list of 3 integers between 0 and 9. Imagine each list of 3 integers is a combination of numbers of a lock. Further suppose the variable code refers to a list of three integers that is the correct combination of the lock.

Write a program which, assuming trials and code are already defined, prints out a character for each digit of each trial. Print Y if the digit in the trail matches the digit at the same position in the code. Print # if the digit in the trial does not match the digit at the same position in the code but appears elsewhere in the code. Print N if the digit of the trial does not match the digit in the code and the digit in the trial appears nowhere in the code. Print a newline after the characters after three numbers (for each trial).

Example, if trails = [[2,3,4], [5,5,5], [5,2,3]], and code = [2,3,5], the program output should be:

Y Y N

# # Y

# # #

Hint: the in and not in operators can be used to test whether an item appears in a list.

(language python.)

Answer 1

Below is a screen shot of the python program to check indentation. Comments are given on every line explaining the code.

Below is the output of the program:


Below is the code to copy:
#CODE STARTS HERE----------------

#Predefined trails and code
trails = [[2,3,4],[5,5,5],[5,2,3]]
code = [2,3,5]

#Loop through the trails
for trail in trails:
   #Loop through each digit in the trail using index
   for x in range(len(trail)):
      # Checks if elements at the same position are matching
      if trail[x] == code[x]:
         print("Y",end=" ")
      #Checks if digit is anywhere in 'code'
      elif trail[x] in code:
         print("#",end=" ")
      #Checks if digit is not in 'code'
      elif trail[x] not in code:
         print("N",end=" ")
   print() #Prints new line after each trail
#CODE ENDS HERE------------------