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readme update + some exercises from 5.1
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‎README.md

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5. [Print statement formatting](https://github.com/antoniolopez7217/Python_Programming_MOOC/tree/main/part4/5.%20Print%20statement%20formatting)
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6. [More strings and lists](https://github.com/antoniolopez7217/Python_Programming_MOOC/tree/main/part4/6.%20More%20strings%20and%20lists)
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### [Part 5]()
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### [Part 5](https://github.com/antoniolopez7217/Python_Programming_MOOC/tree/main/part5)
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1. [More lists]()
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2. [References]()
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3. [Dictionary]()

‎part3/README.md

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# Part 3
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## Programming exercises
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### Loops with conditions
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1. [Print numbers](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/print_numbers.py)
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2. [Fix the code: Countdown](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/countdown.py)
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3. [Numbers](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/numbers.py)
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4. [Powers of two](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/powers_two.py)
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5. [Powers of base n](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/power_basen.py)
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6. [The sum of consecutive numbers, version 1](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/sum_consec_numb_v1.py)
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7. [The sum of consecutive numbers, version 2](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/sum_consec_numb_v2.py)
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1. [Print numbers](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/1.%20Loops%20with%20conditions/print_numbers.py)
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2. [Fix the code: Countdown](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/1.%20Loops%20with%20conditions/countdown.py)
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3. [Numbers](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/1.%20Loops%20with%20conditions/numbers.py)
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4. [Powers of two](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/1.%20Loops%20with%20conditions/powers_two.py)
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5. [Powers of base n](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/1.%20Loops%20with%20conditions/power_basen.py)
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6. [The sum of consecutive numbers, version 1](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/1.%20Loops%20with%20conditions/sum_consec_numb_v1.py)
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7. [The sum of consecutive numbers, version 2](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/1.%20Loops%20with%20conditions/sum_consec_numb_v2.py)
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### Working with strings
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1. [String multiplied](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/string_multiplied.py)
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2. [The longer string](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/longer_string.py)
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3. [End to beginning](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/end_beginning.py)
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4. [Second and second to last characters](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/second_last_chars.py)
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5. [A line of hashes](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/line_hashes.py)
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6. [A rectangle of hashes](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/rectangle_hashes.py)
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7. [Underlining](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/underlining.py)
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8. [Right-aligned](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/right_aligned.py)
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9. [A framed word](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/framed_word.py)
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10. [Substrings, part 1](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/substrings_p1.py)
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11. [Substrings, part 2](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/substrings_p2.py)
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12. [Does it contain vowels](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/contain_vowels.py)
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13. [Find the first substring](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/first_substring.py)
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14. [Find all the substrings](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/find_all_substring.py)
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15. [The second occurrence](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/second_ocurrence.py)
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1. [String multiplied](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/2.%20Working%20with%20strings/string_multiplied.py)
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2. [The longer string](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/2.%20Working%20with%20strings/longer_string.py)
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3. [End to beginning](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/2.%20Working%20with%20strings/end_beginning.py)
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4. [Second and second to last characters](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/2.%20Working%20with%20strings/second_last_chars.py)
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5. [A line of hashes](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/2.%20Working%20with%20strings/line_hashes.py)
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6. [A rectangle of hashes](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/2.%20Working%20with%20strings/rectangle_hashes.py)
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7. [Underlining](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/2.%20Working%20with%20strings/underlining.py)
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8. [Right-aligned](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/2.%20Working%20with%20strings/right_aligned.py)
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9. [A framed word](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/2.%20Working%20with%20strings/framed_word.py)
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10. [Substrings, part 1](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/2.%20Working%20with%20strings/substrings_p1.py)
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11. [Substrings, part 2](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/2.%20Working%20with%20strings/substrings_p2.py)
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12. [Does it contain vowels](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/2.%20Working%20with%20strings/contain_vowels.py)
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13. [Find the first substring](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/2.%20Working%20with%20strings/first_substring.py)
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14. [Find all the substrings](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/2.%20Working%20with%20strings/find_all_substring.py)
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15. [The second occurrence](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/2.%20Working%20with%20strings/second_ocurrence.py)
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### More loops
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1. [Multiplication](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/multiplication.py)
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2. [First letters of words](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/first_letter_word.py)
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3. [Factorial](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/factorial.py)
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4. [Flip the pairs](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/flip_pairs.py)
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5. [Taking turns](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/taking_turns.py)
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1. [Multiplication](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/3.%20More%20loops/multiplication.py)
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2. [First letters of words](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/3.%20More%20loops/first_letter_word.py)
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3. [Factorial](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/3.%20More%20loops/factorial.py)
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4. [Flip the pairs](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/3.%20More%20loops/flip_pairs.py)
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5. [Taking turns](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/3.%20More%20loops/taking_turns.py)
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### Defining functions
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1. [Seven Brothers](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/seven_brothers.py)
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2. [The first character](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/first_character.py)
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3. [Mean](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/mean.py)
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4. [Print many times](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/print_many_times.py)
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5. [A square of hashes](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/square_hashes.py)
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6. [Chessboard](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/chessboard.py)
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7. [A word squared](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/word_squared.py)
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1. [Seven Brothers](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/4.%20Defining%20functions/seven_brothers.py)
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2. [The first character](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/4.%20Defining%20functions/first_character.py)
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3. [Mean](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/4.%20Defining%20functions/mean.py)
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4. [Print many times](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/4.%20Defining%20functions/print_many_times.py)
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5. [A square of hashes](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/4.%20Defining%20functions/square_hashes.py)
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6. [Chessboard](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/4.%20Defining%20functions/chessboard.py)
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7. [A word squared](https://github.com/antoniolopez7217/Python_Programming_MOOC/blob/main/part3/4.%20Defining%20functions/word_squared.py)
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*All subjects are included as comments within the file of each exercise.*

‎part5/1. More lists/longest_string.py

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# Please write a function named longest(strings: list), which takes a list of strings as its argument.
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# The function finds and returns the longest string in the list.
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# You may assume there is always a single longest string in the list.
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# An example of expected behaviour:
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# if __name__ == "__main__":
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# strings = ["hi", "hiya", "hello", "howdydoody", "hi there"]
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# print(longest(strings))
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# howdydoody
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def longest(strings: list):
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long = strings[0]
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for item in strings:
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if len(item) > len(long):
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long = item
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return long

‎part5/1. More lists/number_of_elements.py

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# Please write a function named count_matching_elements(my_matrix: list, element: int),
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# which takes a two-dimensional array of integers and a single integer value as its arguments.
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# The function then counts how many elements within the matrix match the argument value.
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#
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# An example of how the function should work:
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#
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# m = [[1, 2, 1], [0, 3, 4], [1, 0, 0]]
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# print(count_matching_elements(m, 1))
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#
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# 3
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def count_matching_elements(my_matrix: list, element: int):
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counter = 0
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for row in my_matrix:
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for item in row:
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if item == element:
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counter += 1
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return counter

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