What is the exact meaning of lexicographical order? How it is different from alphabetical order?
Elliott Frisch
lexicographical order is alphabetical order. The other type is numerical ordering. Consider the following values,
1, 10, 2
Those values are in lexicographical order. 10 comes after 2 in numerical order, but 10 comes before 2 in "alphabetical" order.
来源：https://stackoverflow.com/questions/45950646/what-is-lexicographical-order