Definition of lexicographical order?

Question

I am currently reading about std :: next_permutation and have come across the term “lexicographic order”. At a particular point in time, I had no experience with this term, so a Google search for this and found only a few cryptic definitions of this type of order, including a wiki article (at least they are for me).

So can anyone try to help me figure this out? What is a “good” definition of this term for you?

Regarding the wiki article , they argue that the lexicographical order is also known as the alphabetical order, but as I continue to read, I understand that They are not the same. Thus, the current comparison confuses me a bit.

Answer 1

In plain English, when we sort words alphabetically, we use two rules:

• If two words have the same first letter, we compare the second. If the two letters match, we compare the third, etc. Finally, one word comes before another if the first corresponding letter precedes the corresponding letter.

• If two words are identical to the length of the shorter word, the first word will be the first.

So, "Tom" comes before the "Tooth." The first letters are identical ("T"), the second letter "o" is identical, but the third letter diff and "m" precede "o". Therefore, "Tom" comes before the "Tooth."

"" "", "" "" "".

- , . , :

(1,5,10) (1,6,3), "5" "6".

(1,5,10) (1,5,10,15,20), (1,5,10) (1,5,10,15,20).

, , . , : 9:13 8:25. (9,13) (8,25), (8,25) (9,13), 8 9. , ? , (9,13) (9,45), 13 - 45. , , .

Answer 2

. ( )

1:

:

['A','a','a','B','b','C','c','d','E']

:

['A','B','C','E','a','a','b','c','d']

2:

:

['a', 'b', 'aa', 'c', 'ddd', 'f']

:

['a', 'aa', 'b', 'c', 'ddd', 'f']

input = ["z1.txt", "z10.txt", "z3.txt", "z100.txt", "z101.txt"]

lexicogrpahic : ['z1.txt', 'z10.txt', 'z100.txt', 'z101.txt', 'z3.txt']
natural: ['z1.txt', 'z3.txt', 'z10.txt', 'z100.txt', 'z101.txt']

, :

1) Python ?

2) https://blog.codinghorror.com/sorting-for-humans-natural-sort-order/

Answer 3

In layman terms, this means a literal order. In practice, you should sort the character of the strings by character according to their primary numerical (usually ASCII) representation.