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* Review the EN heading format. * Fix pythontutor headings. * Fix pythontutor headings. * bug fixes * Fix headings in **/summary.md * Revisit the CN-to-EN translation for Python code using Claude-4.5 * Revisit the CN-to-EN translation for Java code using Claude-4.5 * Revisit the CN-to-EN translation for Cpp code using Claude-4.5. * Fix the dictionary. * Fix cpp code translation for the multipart strings. * Translate Go code to English. * Update workflows to test EN code. * Add EN translation for C. * Add EN translation for CSharp. * Add EN translation for Swift. * Trigger the CI check. * Revert. * Update en/hash_map.md * Add the EN version of Dart code. * Add the EN version of Kotlin code. * Add missing code files. * Add the EN version of JavaScript code. * Add the EN version of TypeScript code. * Fix the workflows. * Add the EN version of Ruby code. * Add the EN version of Rust code. * Update the CI check for the English version code. * Update Python CI check. * Fix cmakelists for en/C code. * Fix Ruby comments
118 lines
3.0 KiB
Python
118 lines
3.0 KiB
Python
"""
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File: array_hash_map.py
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Created Time: 2022-12-14
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Author: msk397 (machangxinq@gmail.com)
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"""
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class Pair:
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"""Key-value pair"""
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def __init__(self, key: int, val: str):
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self.key = key
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self.val = val
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class ArrayHashMap:
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"""Hash table based on array implementation"""
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def __init__(self):
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"""Constructor"""
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# Initialize array with 100 buckets
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self.buckets: list[Pair | None] = [None] * 100
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def hash_func(self, key: int) -> int:
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"""Hash function"""
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index = key % 100
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return index
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def get(self, key: int) -> str | None:
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"""Query operation"""
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index: int = self.hash_func(key)
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pair: Pair = self.buckets[index]
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if pair is None:
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return None
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return pair.val
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def put(self, key: int, val: str):
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"""Add and update operation"""
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pair = Pair(key, val)
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index: int = self.hash_func(key)
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self.buckets[index] = pair
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def remove(self, key: int):
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"""Remove operation"""
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index: int = self.hash_func(key)
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# Set to None to represent removal
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self.buckets[index] = None
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def entry_set(self) -> list[Pair]:
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"""Get all key-value pairs"""
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result: list[Pair] = []
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for pair in self.buckets:
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if pair is not None:
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result.append(pair)
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return result
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def key_set(self) -> list[int]:
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"""Get all keys"""
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result = []
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for pair in self.buckets:
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if pair is not None:
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result.append(pair.key)
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return result
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def value_set(self) -> list[str]:
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"""Get all values"""
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result = []
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for pair in self.buckets:
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if pair is not None:
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result.append(pair.val)
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return result
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def print(self):
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"""Print hash table"""
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for pair in self.buckets:
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if pair is not None:
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print(pair.key, "->", pair.val)
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"""Driver Code"""
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if __name__ == "__main__":
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# Initialize hash table
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hmap = ArrayHashMap()
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# Add operation
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# Add key-value pair (key, value) to the hash table
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hmap.put(12836, "Xiao Ha")
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hmap.put(15937, "Xiao Luo")
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hmap.put(16750, "Xiao Suan")
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hmap.put(13276, "Xiao Fa")
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hmap.put(10583, "Xiao Ya")
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print("\nAfter adding, the hash table is\nKey -> Value")
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hmap.print()
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# Query operation
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# Input key into the hash table to get value
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name = hmap.get(15937)
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print("\nInput student ID 15937, found name " + name)
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# Remove operation
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# Remove key-value pair (key, value) from the hash table
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hmap.remove(10583)
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print("\nAfter removing 10583, the hash table is\nKey -> Value")
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hmap.print()
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# Traverse hash table
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print("\nTraverse key-value pairs Key->Value")
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for pair in hmap.entry_set():
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print(pair.key, "->", pair.val)
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print("\nTraverse keys only Key")
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for key in hmap.key_set():
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print(key)
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print("\nTraverse values only Value")
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for val in hmap.value_set():
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print(val)
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