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создана функция, проводящая замеры, функция сохраняющая замеры
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@ -217,4 +217,90 @@ def measure_delete(obj, struct_name, names_to_delete):
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for name in names_to_delete:
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for name in names_to_delete:
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obj = bst_delete(obj, name)
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obj = bst_delete(obj, name)
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elapsed = time.perf_counter() - start
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elapsed = time.perf_counter() - start
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return elapsed, obj
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return elapsed, obj
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def run_experiment(n=10000, repeats=5):
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records_sorted, records_shuffled = generate_test_data(n)
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existing_names = [name for name, _ in records_sorted[:100]]
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nonexisting_names = [f"None_{i}" for i in range(10)]
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all_names = [name for name, _ in records_sorted]
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structures = ["LinkedList", "HashTable", "BST"]
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modes = [("shuffled", records_shuffled), ("sorted", records_sorted)]
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results = []
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for struct_name in structures:
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for mode_name, records in modes:
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for rep in range(repeats):
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insert_time, obj = measure_insert(struct_name, records)
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results.append([struct_name, mode_name, "insert", rep+1, insert_time])
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find_time = measure_find(obj, struct_name, existing_names, nonexisting_names)
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results.append([struct_name, mode_name, "find", rep+1, find_time])
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random.seed(rep)
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to_delete = random.sample(all_names, 50)
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delete_time, obj = measure_delete(obj, struct_name, to_delete)
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results.append([struct_name, mode_name, "delete", rep+1, delete_time])
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return results
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def save_results_to_csv(results, filename="docs/data/results.csv"):
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os.makedirs(os.path.dirname(filename), exist_ok=True)
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with open(filename, 'w', newline='', encoding='utf-8') as f:
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writer = csv.writer(f)
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writer.writerow(["Structure", "Mode", "Operation", "Repeat", "Time_sec"])
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writer.writerows(results)
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print(f"Результаты сохранены в {filename}")
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def aggregate_results(results):
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from collections import defaultdict
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agg = defaultdict(list)
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for row in results:
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struct, mode, op, rep, t = row
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agg[(struct, mode, op)].append(t)
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means = {k: sum(v)/len(v) for k, v in agg.items()}
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return means
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def plot_results(means, output_dir="docs"):
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try:
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import matplotlib.pyplot as plt
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import numpy as np
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except ImportError:
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print("Matplotlib не установлен. Графики не построены.")
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return
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operations = ["insert", "find", "delete"]
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structures = ["LinkedList", "HashTable", "BST"]
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modes = ["shuffled", "sorted"]
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fig, axes = plt.subplots(1, 3, figsize=(15, 5))
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for idx, op in enumerate(operations):
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ax = axes[idx]
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x = np.arange(len(structures))
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width = 0.35
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shuffled_means = [means.get((struct, "shuffled", op), 0) for struct in structures]
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sorted_means = [means.get((struct, "sorted", op), 0) for struct in structures]
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ax.bar(x - width/2, shuffled_means, width, label='случайный порядок', color='skyblue')
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ax.bar(x + width/2, sorted_means, width, label='отсортированный порядок', color='salmon')
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ax.set_xticks(x)
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ax.set_xticklabels(structures, rotation=15)
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ax.set_ylabel('Время (сек)')
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ax.set_title(f'{op.upper()}')
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ax.legend()
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ax.grid(axis='y', linestyle='--', alpha=0.7)
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plt.tight_layout()
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plt.savefig(os.path.join(output_dir, "comparison.png"), dpi=150)
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plt.show()
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if __name__ == "__main__":
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results = run_experiment(n=10000, repeats=5)
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save_results_to_csv(results)
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means = aggregate_results(results)
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print("\nСреднее время по операциям (сек):")
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for (struct, mode, op), t in sorted(means.items()):
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print(f"{struct:12} {mode:8} {op:6} : {t:.6f}")
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plot_results(means)
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