'''
can you fix the bug in this code snippet?
#check if two strings are anagrams
def is_anagram(a,b):
for char in a:
if char not in b:
return False
return True
show me pseudo-code of an adaptive BCI algorithm please 1d
An SIR model in python, using matplotlib for visualization
'''
import numpy as np
import matplotlib.pyplot as plt

# Define model parameters
beta = 0.3
gamma = 0.1
population = 1000
I0 = 1
R0 = 0
S0 = population - I0 - R0
days = 100

# Define arrays to store results
S = np.zeros(days)
I = np.zeros(days)
R = np.zeros(days)

# Initialize arrays with initial values
S[0] = S0
I[0] = I0
R[0] = R0

# Implement the SIR model
for t in range(1, days):
    # Calculate new infections
    new_infections = beta * I[t-1] * S[t-1] / population
    
    # Calculate new recoveries
    new_recoveries = gamma * I[t-1]
    
    # Update values for S, I, and R
    S[t] = S[t-1] - new_infections
    I[t] = I[t-1] + new_infections - new_recoveries
    R[t] = R[t-1] + new_recoveries

# Plot the results
plt.plot(S, label='Susceptible')
plt.plot(I, label='Infected')
plt.plot(R, label='Recovered')
plt.legend()
plt.xlabel('Days')
plt.ylabel('Number of individuals')
plt.show()