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|---|---|---|
| @@ -1 +1 @@ | ||
| [{"due": "10/9/24", "link": "hw/hw05/", "name": "HW 05: Tree Recursion", "piazza_name": "HW 05", "release": "10/2/24"}, {"due": "10/11/24", "link": "lab/lab06/", "name": "Lab 06: Mutability", "piazza_name": "Lab 06", "release": "10/7/24"}, {"due": "10/16/24", "link": "proj/cats/", "name": "Cats", "piazza_name": "Cats", "release": "10/2/24"}] | ||
| [{"due": "10/9/24", "link": "hw/hw05/", "name": "HW 05: Tree Recursion", "piazza_name": "HW 05", "release": "10/2/24"}, {"due": "10/11/24", "link": "lab/lab06/", "name": "Lab 06: Mutability", "piazza_name": "Lab 06", "release": "10/7/24"}, {"due": "10/16/24", "link": "hw/hw06/", "name": "HW 06: Mutability", "piazza_name": "HW 06", "release": "10/9/24"}, {"due": "10/16/24", "link": "proj/cats/", "name": "Cats", "piazza_name": "Cats", "release": "10/2/24"}] |
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|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| class Account: | ||
| """An account has a balance and a holder. | ||
| >>> a = Account('John') | ||
| >>> a.holder | ||
| 'John' | ||
| >>> a.deposit(100) | ||
| 100 | ||
| >>> a.withdraw(90) | ||
| 10 | ||
| >>> a.withdraw(90) | ||
| 'Insufficient funds' | ||
| >>> a.balance | ||
| 10 | ||
| """ | ||
| def __init__(self, account_holder): | ||
| self.holder = account_holder | ||
| self.balance = 0 | ||
|
|
||
| def deposit(self, amount): | ||
| """Add amount to balance.""" | ||
| self.balance = self.balance + amount | ||
| return self.balance | ||
|
|
||
| def withdraw(self, amount): | ||
| """Subtract amount from balance if funds are available.""" | ||
| if amount > self.balance: | ||
| return 'Insufficient funds' | ||
| self.balance = self.balance - amount | ||
| return self.balance | ||
|
|
||
| def transfer(out_of, into, amount): | ||
| """Transfer amount between two accounts. | ||
| >>> john = Account('John') | ||
| >>> jack = Account('Jack') | ||
| >>> john.deposit(100) | ||
| 100 | ||
| >>> jack.deposit(100000) | ||
| 100000 | ||
| >>> transfer(jack, john, 1000) | ||
| 'Transfer successful' | ||
| >>> john.balance | ||
| 1100 | ||
| >>> jack.balance | ||
| 99000 | ||
| >>> transfer(john, jack, 10000) | ||
| 'Insufficient funds' | ||
| >>> transfer(john, jack, 10) | ||
| 'Transfer successful' | ||
| >>> john.balance | ||
| 1090 | ||
| >>> jack.balance | ||
| 99010 | ||
| """ | ||
| result = out_of.withdraw(amount) | ||
| if type(result) == str: # something went wrong | ||
| return result | ||
| else: | ||
| into.deposit(amount) | ||
| return 'Transfer successful' | ||
|
|
||
| class Scam: | ||
| """A scam account has a balance and a holder. | ||
| >>> a = Scam('John') | ||
| >>> a.holder | ||
| 'John' | ||
| >>> a.deposit(100) | ||
| 102.0 | ||
| >>> a.withdraw(90) | ||
| 'We apologize for the delay' | ||
| >>> a.withdraw(90) | ||
| 'We apologize for the delay' | ||
| >>> a.balance | ||
| 102.0 | ||
| """ | ||
| def __init__(self, account_holder): | ||
| self.holder = account_holder | ||
| self.balance = 0 | ||
|
|
||
| def deposit(self, amount): | ||
| """Add amount +2% to balance.""" | ||
| self.balance = self.balance + amount * 1.02 | ||
| return self.balance | ||
|
|
||
| def withdraw(self, amount): | ||
| """Subtract amount from balance if funds are available.""" | ||
| return 'We apologize for the delay' |
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|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| { | ||
| "name": "Homework 6", | ||
| "endpoint": "cal/c88c/fa24/hw06", | ||
| "src": [ | ||
| "hw06.py" | ||
| ], | ||
| "tests": { | ||
| "hw*.py": "doctest", | ||
| "tests/*.py": "ok_test" | ||
| }, | ||
| "default_tests": [ | ||
| "shuffle", | ||
| "deep_map" | ||
| ], | ||
| "protocols": [ | ||
| "restore", | ||
| "file_contents", | ||
| "analytics", | ||
| "help", | ||
| "unlock", | ||
| "grading", | ||
| "backup" | ||
| ] | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| def shuffle(s): | ||
| """Return a shuffled list that interleaves the two halves of s. | ||
| >>> shuffle(range(6)) | ||
| [0, 3, 1, 4, 2, 5] | ||
| >>> letters = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h'] | ||
| >>> shuffle(letters) | ||
| ['a', 'e', 'b', 'f', 'c', 'g', 'd', 'h'] | ||
| >>> shuffle(shuffle(letters)) | ||
| ['a', 'c', 'e', 'g', 'b', 'd', 'f', 'h'] | ||
| >>> letters # Original list should not be modified | ||
| ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h'] | ||
| """ | ||
| assert len(s) % 2 == 0, 'len(seq) must be even' | ||
| "*** YOUR CODE HERE ***" | ||
|
|
||
|
|
||
| def deep_map(f, s): | ||
| """Replace all non-list elements x with f(x) in the nested list s. | ||
| >>> six = [1, 2, [3, [4], 5], 6] | ||
| >>> deep_map(lambda x: x * x, six) | ||
| >>> six | ||
| [1, 4, [9, [16], 25], 36] | ||
| >>> # Check that you're not making new lists | ||
| >>> s = [3, [1, [4, [1]]]] | ||
| >>> s1 = s[1] | ||
| >>> s2 = s1[1] | ||
| >>> s3 = s2[1] | ||
| >>> deep_map(lambda x: x + 1, s) | ||
| >>> s | ||
| [4, [2, [5, [2]]]] | ||
| >>> s1 is s[1] | ||
| True | ||
| >>> s2 is s1[1] | ||
| True | ||
| >>> s3 is s2[1] | ||
| True | ||
| """ | ||
| "*** YOUR CODE HERE ***" | ||
|
|
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