please answer the following question

Let X1, ..., Xn be a random sample from a given distributions with parameter 0. Find a non-trivial sufficient statistic for 0. a) Uniform (0 - 1, 0 + 1), 0 > 0; b) Normal (M, 02), 0 = (1, o); c) Logistic (0, 1); d) Double exponential (0)