AlgoDatSoSe24/SoSe24/lec05_hash/hash_plot.py

from SoSe24.algodat.foundation import AlgoDatArray, AlgoDatValue, read_int_sequence, read_int_sequence_limited
import matplotlib
import matplotlib.pyplot as plt
import hash_table as ht

if __name__ == "__main__":
    filename = "../../seq3.txt"
    dummy = read_int_sequence(filename)
    n = len(dummy)
    step = n // 100

    memory_values = []
    compare_values = []
    alpha_values = []

    for right_end in range(1, n, step):
        AlgoDatValue.reset()
        z = read_int_sequence_limited(filename, right_end)
        hash = ht.HashTable(int(right_end*2), hash_function=ht.h, exploratory_function=ht.f1)
        for i in z:
            hash.insert(i)
        memory_values.append(AlgoDatValue.memory)
        compare_values.append(AlgoDatValue.compare)
        alpha_values.append(hash.alpha())

    plt.plot(range(1, n, step), memory_values, 'b', label='Memory')
    plt.plot(range(1, n, step), compare_values, 'r', label='Compare')
    plt.plot(range(1, n, step), alpha_values, 'g', label='Alpha')

    plt.legend()
    plt.show()