用于确定排序数组中最大连续均匀间隔数值的算法？

For example, in the input array [0,1,4,6,8,9,12] the largest set of successively evenly spaced numbers is {0,4,8,12} and the next largest that isn't a subset of the largest is {4,6,8}.For example, in the input array [0,1,4,6,8,9,12