Solve

[transposition]

class Solve:
    # http://math.stackexchange.com/questions/145458/solve-equations-using-the-max-function
    def max(self, coef, y):
        solutions = []
        sum_cons = 0.0
        sum_coef = 0.0
        for i in range(len(coef)):
            sum_cons += coef[i][1]
            sum_coef += coef[i][2]
        coef = sorted(coef, key=lambda t: t[0])
        res = (sum_cons - y) / sum_coef
        if res <= coef[0][0]:
            solutions.append(res)
        for i in range(1, len(coef)):
            sum_cons -= coef[i - 1][1]
            sum_coef -= coef[i - 1][2]
            res = (sum_cons - y) / sum_coef
            if res <= coef[i]:  ## float <= tumple!
                solutions.append(res)
                break
        return solutions

if res <= coef[i]: 是不是应该要改成 coef[i][0]

[wangrunjie]

是的，应该改成 coef[i][0]