70 lines
1.6 KiB
Python
70 lines
1.6 KiB
Python
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def ll_insert(head, name, phone):
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if head is None:
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return {'name': name, 'phone': phone, 'next': None}
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curr = head
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while True:
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if curr['name'] == name:
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curr['phone'] = phone
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return head
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if curr['next'] is None:
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break
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curr = curr['next']
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curr['next'] = {'name': name, 'phone': phone, 'next': None}
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return head
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def ll_find(head, name):
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curr = head
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while curr is not None:
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if curr['name'] == name:
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return curr['phone']
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curr = curr['next']
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return None
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def ll_delete(head, name):
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if head is None:
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return None
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if head['name'] == name:
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return head['next']
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curr = head
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while curr['next'] is not None:
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if curr['next']['name'] == name:
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curr['next'] = curr['next']['next']
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return head
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curr = curr['next']
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return head
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def ll_list_all(head):
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res = []
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curr = head
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while curr is not None:
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res.append((curr['name'], curr['phone']))
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curr = curr['next']
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res.sort(key=lambda x: x[0])
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return res
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if __name__ == "__main__":
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book = None
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book = ll_insert(book, "Маша", "8900111")
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book = ll_insert(book, "Саша", "8900222")
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book = ll_insert(book, "Даша", "8900333")
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print(ll_list_all(book))
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book = ll_insert(book, "Маша", "0000000")
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print(ll_list_all(book))
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print(ll_find(book, "Саша"))
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print(ll_find(book, "Петя"))
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book = ll_delete(book, "Маша")
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book = ll_delete(book, "Саша")
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print(ll_list_all(book))
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