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find_mode working
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1 changed files with 249 additions and 206 deletions
455
hash_map_sc.py
455
hash_map_sc.py
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@ -6,6 +6,7 @@
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# Description: HashMap implementation using Separate Chaining
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import matplotlib
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from a6_include import (
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DynamicArray,
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LinkedList,
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@ -76,6 +77,26 @@ class HashMap:
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else:
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node.value = value
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def find_mode_put(self, key: str, value: object) -> None:
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"""Adds (or updates) a key/value pair to the hash map
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Parameters
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----------
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key : str
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Identifier for the given value
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value : object
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Value to add, or update if the key is already present
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"""
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hash = self._hash_function(key)
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index = hash % self._capacity
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node = self._buckets[index].contains(key)
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if node is None:
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self._buckets[index].insert(key, value)
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self._size += 1
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else:
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node.value = node.value + value
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def empty_buckets(self) -> int:
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"""Gets the number of empty buckets in the hash table
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@ -220,8 +241,21 @@ class HashMap:
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def find_mode(da: DynamicArray) -> (DynamicArray, int):
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"""
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TODO: Write this implementation
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"""Get the mode(s) and their frequency from a dynamic array
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If there is more than one value that has the highest frequency all values at
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that frequency will be included. The dynamic array must contain at least 1
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element, and all elements must be strings.
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Parameters
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----------
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da : DynamicArray
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The dynamic array for which mode and frequency is needed
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Returns
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-------
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(DynamicArray, int) : tuple
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Dynamic array with the mode(s), Integer representing highest frequency
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"""
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mode_arr = DynamicArray()
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@ -229,233 +263,242 @@ def find_mode(da: DynamicArray) -> (DynamicArray, int):
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mode_arr.append(da[0])
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return mode_arr, 1
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# use this instance of your Separate Chaining HashMap
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map = HashMap(da.length() // 3, hash_function_1)
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item = 1
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for i in range(da.length()):
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key = "key" + str(item)
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map.put(key, da[i])
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item += 1
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map.find_mode_put(da[i], 1)
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return -1, -1
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keys = map.get_keys()
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max_val = 1
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for i in range(keys.length()):
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value = map.get(keys[i])
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if value > max_val:
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max_val = value
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mode_arr = DynamicArray()
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mode_arr.append(keys[i])
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elif value == max_val:
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mode_arr.append(keys[i])
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return mode_arr, max_val
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# ------------------- BASIC TESTING ---------------------------------------- #
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# ------------------- BASIC TESTING ---------------------------------------- #
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if __name__ == "__main__":
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if __name__ == "__main__":
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print("\nPDF - put example 1")
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print("-------------------")
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m = HashMap(50, hash_function_1)
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for i in range(150):
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m.put("str" + str(i), i * 100)
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if i % 25 == 24:
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print(m.empty_buckets(), m.table_load(), m.get_size(), m.get_capacity())
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print("\nPDF - put example 1")
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print("-------------------")
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m = HashMap(50, hash_function_1)
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for i in range(150):
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m.put("str" + str(i), i * 100)
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if i % 25 == 24:
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print(m.empty_buckets(), m.table_load(), m.get_size(), m.get_capacity())
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print("\nPDF - put example 2")
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print("-------------------")
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m = HashMap(40, hash_function_2)
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for i in range(50):
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m.put("str" + str(i // 3), i * 100)
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if i % 10 == 9:
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print(m.empty_buckets(), m.table_load(), m.get_size(), m.get_capacity())
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print("\nPDF - put example 2")
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print("-------------------")
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m = HashMap(40, hash_function_2)
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for i in range(50):
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m.put("str" + str(i // 3), i * 100)
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if i % 10 == 9:
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print(m.empty_buckets(), m.table_load(), m.get_size(), m.get_capacity())
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print("\nPDF - empty_buckets example 1")
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print("-----------------------------")
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m = HashMap(100, hash_function_1)
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print(m.empty_buckets(), m.get_size(), m.get_capacity())
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m.put("key1", 10)
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print(m.empty_buckets(), m.get_size(), m.get_capacity())
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m.put("key2", 20)
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print(m.empty_buckets(), m.get_size(), m.get_capacity())
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m.put("key1", 30)
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print(m.empty_buckets(), m.get_size(), m.get_capacity())
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m.put("key4", 40)
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print(m.empty_buckets(), m.get_size(), m.get_capacity())
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print("\nPDF - empty_buckets example 1")
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print("-----------------------------")
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m = HashMap(100, hash_function_1)
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print(m.empty_buckets(), m.get_size(), m.get_capacity())
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m.put("key1", 10)
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print(m.empty_buckets(), m.get_size(), m.get_capacity())
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m.put("key2", 20)
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print(m.empty_buckets(), m.get_size(), m.get_capacity())
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m.put("key1", 30)
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print(m.empty_buckets(), m.get_size(), m.get_capacity())
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m.put("key4", 40)
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print(m.empty_buckets(), m.get_size(), m.get_capacity())
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print("\nPDF - empty_buckets example 2")
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print("-----------------------------")
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m = HashMap(50, hash_function_1)
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for i in range(150):
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m.put("key" + str(i), i * 100)
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if i % 30 == 0:
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print(m.empty_buckets(), m.get_size(), m.get_capacity())
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print("\nPDF - empty_buckets example 2")
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print("-----------------------------")
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m = HashMap(50, hash_function_1)
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for i in range(150):
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m.put("key" + str(i), i * 100)
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if i % 30 == 0:
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print(m.empty_buckets(), m.get_size(), m.get_capacity())
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print("\nPDF - table_load example 1")
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print("--------------------------")
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m = HashMap(100, hash_function_1)
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print(m.table_load())
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m.put("key1", 10)
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print(m.table_load())
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m.put("key2", 20)
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print(m.table_load())
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m.put("key1", 30)
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print(m.table_load())
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print("\nPDF - table_load example 1")
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print("--------------------------")
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m = HashMap(100, hash_function_1)
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print(m.table_load())
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m.put("key1", 10)
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print(m.table_load())
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m.put("key2", 20)
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print(m.table_load())
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m.put("key1", 30)
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print(m.table_load())
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print("\nPDF - table_load example 2")
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print("--------------------------")
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m = HashMap(50, hash_function_1)
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for i in range(50):
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m.put("key" + str(i), i * 100)
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if i % 10 == 0:
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print(m.table_load(), m.get_size(), m.get_capacity())
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print("\nPDF - table_load example 2")
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print("--------------------------")
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m = HashMap(50, hash_function_1)
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for i in range(50):
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m.put("key" + str(i), i * 100)
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if i % 10 == 0:
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print(m.table_load(), m.get_size(), m.get_capacity())
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print("\nPDF - clear example 1")
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print("---------------------")
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m = HashMap(100, hash_function_1)
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print(m.get_size(), m.get_capacity())
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m.put("key1", 10)
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m.put("key2", 20)
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m.put("key1", 30)
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print(m.get_size(), m.get_capacity())
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m.clear()
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print(m.get_size(), m.get_capacity())
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print("\nPDF - clear example 1")
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print("---------------------")
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m = HashMap(100, hash_function_1)
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print(m.get_size(), m.get_capacity())
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m.put("key1", 10)
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m.put("key2", 20)
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m.put("key1", 30)
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print(m.get_size(), m.get_capacity())
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m.clear()
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print(m.get_size(), m.get_capacity())
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print("\nPDF - clear example 2")
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print("---------------------")
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m = HashMap(50, hash_function_1)
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print(m.get_size(), m.get_capacity())
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m.put("key1", 10)
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print(m.get_size(), m.get_capacity())
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m.put("key2", 20)
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print(m.get_size(), m.get_capacity())
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m.resize_table(100)
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print(m.get_size(), m.get_capacity())
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m.clear()
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print(m.get_size(), m.get_capacity())
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print("\nPDF - clear example 2")
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print("---------------------")
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m = HashMap(50, hash_function_1)
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print(m.get_size(), m.get_capacity())
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m.put("key1", 10)
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print(m.get_size(), m.get_capacity())
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m.put("key2", 20)
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print(m.get_size(), m.get_capacity())
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m.resize_table(100)
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print(m.get_size(), m.get_capacity())
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m.clear()
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print(m.get_size(), m.get_capacity())
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print("\nPDF - resize example 1")
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print("----------------------")
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m = HashMap(20, hash_function_1)
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m.put("key1", 10)
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print(m.get_size(), m.get_capacity(), m.get("key1"), m.contains_key("key1"))
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m.resize_table(30)
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print(m.get_size(), m.get_capacity(), m.get("key1"), m.contains_key("key1"))
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print("\nPDF - resize example 1")
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print("----------------------")
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m = HashMap(20, hash_function_1)
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m.put("key1", 10)
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print(m.get_size(), m.get_capacity(), m.get("key1"), m.contains_key("key1"))
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m.resize_table(30)
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print(m.get_size(), m.get_capacity(), m.get("key1"), m.contains_key("key1"))
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print("\nPDF - resize example 2")
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print("----------------------")
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m = HashMap(75, hash_function_2)
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keys = [i for i in range(1, 1000, 13)]
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for key in keys:
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m.put(str(key), key * 42)
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print(m.get_size(), m.get_capacity())
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print("\nPDF - resize example 2")
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print("----------------------")
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m = HashMap(75, hash_function_2)
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keys = [i for i in range(1, 1000, 13)]
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for key in keys:
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m.put(str(key), key * 42)
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print(m.get_size(), m.get_capacity())
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for capacity in range(111, 1000, 117):
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m.resize_table(capacity)
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for capacity in range(111, 1000, 117):
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m.resize_table(capacity)
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m.put("some key", "some value")
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result = m.contains_key("some key")
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m.remove("some key")
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m.put("some key", "some value")
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result = m.contains_key("some key")
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m.remove("some key")
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for key in keys:
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# all inserted keys must be present
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result &= m.contains_key(str(key))
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# NOT inserted keys must be absent
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result &= not m.contains_key(str(key + 1))
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print(
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capacity,
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result,
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m.get_size(),
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m.get_capacity(),
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round(m.table_load(), 2),
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)
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print("\nPDF - get example 1")
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print("-------------------")
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m = HashMap(30, hash_function_1)
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print(m.get("key"))
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m.put("key1", 10)
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print(m.get("key1"))
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print("\nPDF - get example 2")
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print("-------------------")
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m = HashMap(150, hash_function_2)
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for i in range(200, 300, 7):
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m.put(str(i), i * 10)
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print(m.get_size(), m.get_capacity())
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for i in range(200, 300, 21):
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print(i, m.get(str(i)), m.get(str(i)) == i * 10)
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print(i + 1, m.get(str(i + 1)), m.get(str(i + 1)) == (i + 1) * 10)
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print("\nPDF - contains_key example 1")
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print("----------------------------")
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m = HashMap(10, hash_function_1)
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print(m.contains_key("key1"))
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m.put("key1", 10)
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m.put("key2", 20)
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m.put("key3", 30)
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print(m.contains_key("key1"))
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print(m.contains_key("key4"))
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print(m.contains_key("key2"))
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print(m.contains_key("key3"))
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m.remove("key3")
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print(m.contains_key("key3"))
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print("\nPDF - contains_key example 2")
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print("----------------------------")
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m = HashMap(75, hash_function_2)
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keys = [i for i in range(1, 1000, 20)]
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for key in keys:
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m.put(str(key), key * 42)
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print(m.get_size(), m.get_capacity())
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result = True
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for key in keys:
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# all inserted keys must be present
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result &= m.contains_key(str(key))
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# NOT inserted keys must be absent
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result &= not m.contains_key(str(key + 1))
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print(
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capacity, result, m.get_size(), m.get_capacity(), round(m.table_load(), 2)
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print(result)
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print("\nPDF - remove example 1")
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print("----------------------")
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m = HashMap(50, hash_function_1)
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print(m.get("key1"))
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m.put("key1", 10)
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print(m.get("key1"))
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m.remove("key1")
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print(m.get("key1"))
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m.remove("key4")
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print("\nPDF - get_keys example 1")
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print("------------------------")
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m = HashMap(10, hash_function_2)
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for i in range(100, 200, 10):
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m.put(str(i), str(i * 10))
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print(m.get_keys())
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m.resize_table(1)
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print(m.get_keys())
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m.put("200", "2000")
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m.remove("100")
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m.resize_table(2)
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print(m.get_keys())
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print("\nPDF - find_mode example 1")
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print("-----------------------------")
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da = DynamicArray(["apple", "apple", "grape", "melon", "melon", "peach"])
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map = HashMap(da.length() // 3, hash_function_1)
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mode, frequency = find_mode(da)
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print(f"Input: {da}\nMode: {mode}, Frequency: {frequency}")
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print("\nPDF - find_mode example 2")
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print("-----------------------------")
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test_cases = (
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[
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"Arch",
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"Manjaro",
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"Manjaro",
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"Mint",
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"Mint",
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"Mint",
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"Ubuntu",
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"Ubuntu",
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"Ubuntu",
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"Ubuntu",
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],
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["one", "two", "three", "four", "five"],
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["2", "4", "2", "6", "8", "4", "1", "3", "4", "5", "7", "3", "3", "2"],
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)
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print("\nPDF - get example 1")
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print("-------------------")
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m = HashMap(30, hash_function_1)
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print(m.get("key"))
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m.put("key1", 10)
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print(m.get("key1"))
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print("\nPDF - get example 2")
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print("-------------------")
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m = HashMap(150, hash_function_2)
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for i in range(200, 300, 7):
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m.put(str(i), i * 10)
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print(m.get_size(), m.get_capacity())
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for i in range(200, 300, 21):
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print(i, m.get(str(i)), m.get(str(i)) == i * 10)
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print(i + 1, m.get(str(i + 1)), m.get(str(i + 1)) == (i + 1) * 10)
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print("\nPDF - contains_key example 1")
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print("----------------------------")
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m = HashMap(10, hash_function_1)
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print(m.contains_key("key1"))
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m.put("key1", 10)
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m.put("key2", 20)
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m.put("key3", 30)
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print(m.contains_key("key1"))
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print(m.contains_key("key4"))
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print(m.contains_key("key2"))
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print(m.contains_key("key3"))
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m.remove("key3")
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print(m.contains_key("key3"))
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print("\nPDF - contains_key example 2")
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print("----------------------------")
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m = HashMap(75, hash_function_2)
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keys = [i for i in range(1, 1000, 20)]
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for key in keys:
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m.put(str(key), key * 42)
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print(m.get_size(), m.get_capacity())
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result = True
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for key in keys:
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# all inserted keys must be present
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result &= m.contains_key(str(key))
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# NOT inserted keys must be absent
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result &= not m.contains_key(str(key + 1))
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print(result)
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print("\nPDF - remove example 1")
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print("----------------------")
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m = HashMap(50, hash_function_1)
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print(m.get("key1"))
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m.put("key1", 10)
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print(m.get("key1"))
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m.remove("key1")
|
||||
print(m.get("key1"))
|
||||
m.remove("key4")
|
||||
|
||||
print("\nPDF - get_keys example 1")
|
||||
print("------------------------")
|
||||
m = HashMap(10, hash_function_2)
|
||||
for i in range(100, 200, 10):
|
||||
m.put(str(i), str(i * 10))
|
||||
print(m.get_keys())
|
||||
|
||||
m.resize_table(1)
|
||||
print(m.get_keys())
|
||||
|
||||
m.put("200", "2000")
|
||||
m.remove("100")
|
||||
m.resize_table(2)
|
||||
print(m.get_keys())
|
||||
|
||||
print("\nPDF - find_mode example 1")
|
||||
print("-----------------------------")
|
||||
da = DynamicArray(["apple", "apple", "grape", "melon", "melon", "peach"])
|
||||
map = HashMap(da.length() // 3, hash_function_1)
|
||||
mode, frequency = find_mode(da)
|
||||
print(f"Input: {da}\nMode: {mode}, Frequency: {frequency}")
|
||||
|
||||
print("\nPDF - find_mode example 2")
|
||||
print("-----------------------------")
|
||||
test_cases = (
|
||||
[
|
||||
"Arch",
|
||||
"Manjaro",
|
||||
"Manjaro",
|
||||
"Mint",
|
||||
"Mint",
|
||||
"Mint",
|
||||
"Ubuntu",
|
||||
"Ubuntu",
|
||||
"Ubuntu",
|
||||
"Ubuntu",
|
||||
],
|
||||
["one", "two", "three", "four", "five"],
|
||||
["2", "4", "2", "6", "8", "4", "1", "3", "4", "5", "7", "3", "3", "2"],
|
||||
)
|
||||
|
||||
for case in test_cases:
|
||||
da = DynamicArray(case)
|
||||
map = HashMap(da.length() // 3, hash_function_2)
|
||||
mode, frequency = find_mode(da)
|
||||
print(f"Input: {da}\nMode: {mode}, Frequency: {frequency}\n")
|
||||
for case in test_cases:
|
||||
da = DynamicArray(case)
|
||||
map = HashMap(da.length() // 3, hash_function_2)
|
||||
mode, frequency = find_mode(da)
|
||||
print(f"Input: {da}\nMode: {mode}, Frequency: {frequency}\n")
|
||||
|
|
|
|||
Loading…
Reference in a new issue