🔒 Assertion error on largest change rule

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@reef nacelle

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[reef nacelle]

Code for the larges change rule

def find_pivot_largest_change(tableau):
    M, N = tableau.shape
    m = M-1  # Number of constraints
    n = N-1  # Number of variables
    # Largest change rule: find the non-basic variable that will cause the largest change in the objective function
    max_change = 0
    final_s = 0
    for s in range(1, n+1):
        if tableau[0, s] < 0:
            change = -tableau[0, s]
            if change > max_change:
                max_change = change
                final_s = s
    # Minimum ratio test plus largest change rule:
    # find the (first) row i minimizing b_i / a_{is}, a_{is} > 0
    final_r = 0
    theta_star = np.inf
    for i in range(1, m+1):
        if tableau[i, final_s] > 0:
            if tableau[i, 0] / tableau[i, final_s] < theta_star:
                final_r = i
                theta_star = tableau[i, 0] / tableau[i, final_s]
    return final_r, final_s

[drifting karma]

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@reef nacelle

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