javascript - 正则表达式:任何顺序的特定单词

Question

我不擅长正则表达式，试图制作 2 个正则表达式。

正则表达式1:

All specified words in any order but nothing else. (repetition allowed).

正则表达式2:

All specified words in any order but nothing else. (repetition not allowed).

单词:

aaa, bbb, ccc

字符串:

aaa ccc bbb
aaa ccc
aaa bbb ddd ccc
bbb aaa bbb ccc

Regex1 将以上字符串计算为:

true -> all word present in any order
false -> bbb is missing
false -> unknown word 'ddd'
false -> repetition not allowed

Regex2 将以上字符串计算为:

true -> all word present in any order
false -> bbb is missing
false -> unknown word 'ddd'
true -> all word present in any order and repetition is allowed

我的尝试

/^(?=.*\baaa\b)(?=.*\bbbb\b)(?=.*\bccc\b).*$/

询问学习目的，所以请详细说明。

Answer 1

无重复 ^regex101

^(?:(aaa|bbb|ccc)(?!.*?\b\1) ?\b){3}$

并重复 ^regex101

^(?=.*?\baaa)(?=.*?\bbbb)(?=.*?\bccc)(?:(aaa|bbb|ccc) ?\b)+$

还有两个想法。右侧 regex101 处的正则表达式解释。