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Tricky exercises

Back to the lab Theoretical foundations

Programming task — enter your code and have it checked. Most parts read their values with them input() a: the check feeds in fixed inputs and compares your output line by line — so give only what is required (no additional texts). At part 7 you define the values yourself (none input()); There it is checked whether the function and the lists are structured correctly. input() you know from the “Variables” module.

Part 1 — Separate even and odd

Split the numbers read into two lists.

Exercise

  1. Read this first Number n as an integer (int(input())), after that n additional integers — one per input().
  2. Collect the even numbers in one list and the odd ones in a second list (even means: through 2 divisible without remainder, so z % 2 == 0) — in the order in which they were entered.
  3. Give in Row 1 the list of even numbers, in Row 2 the list of odd ones — e.g. B. [4, 2, 10] and below [7, 9, 13].
  4. Example: input 6 then 4 7 2 9 10 13 → [4, 2, 10] and below [7, 9, 13].

Part 1 — Your Code

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Output

    

    


        

            
        

    


    
    

        
Part 2 — Find the largest number

        
Maximum manual — without max().

        

            
Exercise

            
    
                
  1. Read this first Number n as an integer (int(input())), after that n additional integers — one per input().
    2. 
                
  2. Determine which largest Number with a marker: set it to the first number and replace it as soon as a larger number comes up.
    3. 
                
  3. Don't use max().
    4. 
                
  4. Pass only the largest number from — at 5 then
                    3 17 5 12 8 therefore 17.
    5. 
            

        

        

    

        
Part 2 — Your Code

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Part 3 — Count grades

        
Collect frequencies in a dictionary.

        

            
Exercise

            
    
                
  1. Read this first Number n as an integer (int(input())), after that n Grades as whole numbers — one per input().
    2. 
                
  2. Create an empty dictionary. If the note is already a key, increase its value by 1, otherwise put it with the value 1 on.
    3. 
                
  3. Output the finished dictionary — e.g. B. {1: 2, 2: 3, 3: 1, 4: 1}.
    4. 
                
  4. Example: 7 then 1 2 2 3 1 4 2 →
                    {1: 2, 2: 3, 3: 1, 4: 1}.
    5. 
            

        

        

    

        
Part 3 — Your Code

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Part 4 — Sorting without sort()

        
Bubble sort with comparison and exchange.

        

            
Exercise

            
    
                
  1. Read this first Number n as an integer (int(input())), after that n integers — one per input() — and collect them in a list.
    2. 
                
  2. Sort the list from small to large: compare adjacent elements in nested loops and swap them if the one on the left is larger than the one on the right.
    3. 
                
  3. Don't use sort() or sorted().
    4. 
                
  4. Output the sorted list — at 5 then
                    8 3 6 1 9 therefore [1, 3, 6, 8, 9].
    5. 
            

            
Tip for swapping: Either cache with an auxiliary variable or, more briefly, with the Python tuple swap a, b = b, a.

        

        

    

        
Part 4 — Your Code

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Output

        

    

    


        

            
        

    


    
    

        
Part 5 — Check password list

        
Decide per input and output one line.

        

            
Exercise

            
    
                
  1. Read this first Number n as an integer (int(input())), after that n Passwords as text — one per input().
    2. 
                
  2. Be specific for each password one line of: lang genug, if it has at least 4 characters (len(passwort) >= 4), otherwise zu kurz.
    3. 
                
  3. Pay attention to the text and the limit (exactly 4 characters is “long enough”).
    4. 
                
  4. Example: 4 then ab, test, hallo, xy →
                    zu kurz / lang genug / lang genug / zu kurz.
    5. 
            

        

        

    

        
Part 5 — Your Code

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Output

        

    

    


        

            
        

    


    
    

        
Part 6 — Calculating Averages

        
Read and calculate multiple data sets.

        

            
Exercise

            
    
                
  1. Read this first Number n the student as a whole number (int(input())).
    2. 
                
  2. Then read per student successively three values with one each input(): the Name as text (input()), Note 1 and
                    Note 2 each as a decimal number (float(input())).
    3. 
                
  3. Calculate the average as (Note 1+ grade 2) divided by 2
                    and give exactly per student one line in the form Name: Durchschnitt
                    from — e.g. B. Mia: 3.0 (name, colon, space, then the average).
    4. 
                
  4. Example: 2, then Mia 2 4 and Tom 2 3 →
                    Mia: 3.0 / Tom: 2.5.
    5. 
            

        

        

    

        
Part 6 — Your Code

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Part 7 — Squares of a List

        
Define a function and apply it to each list element - here without input().

        

            
Exercise

            
This exercise will not read in: you set the numbers yourself. The core is that Define the function and that Images (Mapping) via a list.

            
    
                
  1. Write a function named quadrat, the a number
                    receives and its square (the number times itself) return.
    2. 
                
  2. Leg yourself a list with the name zahlen with
                    at least three integers (e.g. B. [2, 4, 6, 8]).
    3. 
                
  3. Calls quadrat in a loop for each number and collect the results in a new list named quadrate.
    4. 
                
  4. Give the list quadrate from — with the numbers
                    [2, 4, 6, 8] therefore [4, 16, 36, 64].
    5. 
            

        

        

    

        
Part 7 — Your Code

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Output

        

    

    


        

            
        

    


    
    

        
Part 8 — Doubling to the limit

        
Iterative approximation with while.

        

            
Exercise

            
    
                
  1. Read that Date as an integer (int(input())).
    2. 
                
  2. Double the value in one while loop while it smaller than
                    100 is (that is, until it is at least 100 reached), and count the steps.
    3. 
                
  3. Give in Row 1 the final value, in Row 2 the number of steps - i.e. two lines with a number each.
    4. 
                
  4. Example: starting value 7 → 112 and below 4.
    5. 
            

        

        

    

        
Part 8 — Your Code

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Output

        

    

    


        

            
        

    


    
    

        
Report as PDF

        
Document and download your results.


        

            
Module overview

            

                
PartStatus

                
                    
Part 1: SplitOpen

                    
Part 2: MaximumOpen

                    
Part 3: CountingOpen

                    
Part 4: SortingOpen

                    
Part 5: PasswordsOpen

                    
Part 6: AveragesOpen

                    
Part 7: SquaresOpen

                    
Part 8: ApproximationOpen

                
            

            
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