feat: reformatted 1.29 and 1.30 with black
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+5
-3
@@ -2,6 +2,8 @@
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Write a Python program that outputs all possible strings formed by using the characters 'c', 'a', 't', 'd', 'o', and 'g'
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exactly once.
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"""
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# define 'permute' function
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def permute(char_pool, current_str):
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# base case: if char_pool is empty, print value of 'current_str'
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@@ -11,7 +13,7 @@ def permute(char_pool, current_str):
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# try each remaining character as the next pick
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for i in range(len(char_pool)):
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# pick character at i: pass down pool without it, and string with it added
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permute(char_pool[:i] + char_pool[i+1:], current_str + char_pool[i])
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permute(char_pool[:i] + char_pool[i + 1 :], current_str + char_pool[i])
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permute('catdog', '')
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permute("catdog", "")
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+7
-6
@@ -3,20 +3,21 @@ Write a Python program that can take a positive integer greater than 2 as input
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one must repeatedly divide this number by 2 before getting a value less than 2.
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"""
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def count_steps():
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# input validation: try that input is an integer
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while True:
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try:
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current_value = int(input('Please enter an integer greater than 2: '))
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current_value = int(input("Please enter an integer greater than 2: "))
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# also try that input is above 2, if not print error message
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if current_value <= 2:
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print('Invalid input: Please enter only integers greater than 2.')
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# if input is correct, break the while loop
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print("Invalid input: Please enter only integers greater than 2.")
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# if input is correct, break the while loop
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else:
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break
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# Handle ValueError and print error message
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# Handle ValueError and print error message
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except ValueError:
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print('Invalid input: Please only enter integers.')
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print("Invalid input: Please only enter integers.")
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# set 'step_count' variable to count divisions
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step_count = 0
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@@ -28,4 +29,4 @@ def count_steps():
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print(step_count)
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count_steps()
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count_steps()
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