3042. ???? ??? ? ?? I
???: ??
??: ??, ???, Trie, ?? ??, ??? ??, ?? ??
???? 0? ??? ?? ??? ??????.
? ?? ??? str1? str2? ???? ?? ?? isPrefixAndSuffix? ??? ?????.
- isPrefixAndSuffix(str1, str2)? str1? str2? ???1 ? ???2? ?? true? ????, ??? ?? ?? false? ?????. ?? ??, isPrefixAndSuffix("aba", "ababa")? "aba"? "ababa"? ????? ?????? true??? isPrefixAndSuffix("abc", "abcd")? false???.
i ??
? ???? ??? ?????. j, isPrefixAndSuffix(words[i], word[j])? true???.
? 1:
- ??:
- ?? = ["a","aba","ababa","aa"] ??:
- 4 ??:
- ? ??? ??? ??? ?? ??? ????. i = 0?? j = 1???. isPrefixAndSuffix("a", "aba")? true?? ?????. i = 0?? j = 2???. isPrefixAndSuffix("a", "ababa")? true?? ?????. i = 0?? j = 3???. isPrefixAndSuffix("a", "aa")? true?? ?????. i = 1?? j = 2???. isPrefixAndSuffix("aba", "ababa")? true?? ?????. ???? ?? 4??.
- ??:
- ?? = ["pa","papa","ma","mama"] ??:
- 2 ??:
- ? ??? ??? ??? ?? ??? ????. i = 0?? j = 1???. isPrefixAndSuffix("pa", "papa")? true?? ?????. i = 2?? j = 3???. isPrefixAndSuffix("ma", "mama")? true?? ?????. ??? ?? 2???.
- ??:
- ?? = ["abab","ab"] ??:
- 0 ??:
- ? ??? ??? ??? ??? ?? i = 0 ? j = 1?? isPrefixAndSuffix("abab", "ab")? false???. ???? ?? 0??.
1 <= ??.?? <= 50
- 1 <= ??[i].length <= 10
- word[i]? ?? ????? ?????.
?? ??? ?(i, j)? ???? i < j, isPrefixAndSuffix(words[i],words[j])? ?????.
- ?? isPrefixAndSuffix(words[i],words[j]) == true? ? ? ????.
i
? ???? PHP? ??? ?????: 3042. ???? ??? ? ?? I
??:
countPrefixAndSuffixPairs($words):
- ? ??? i < j.
- isPrefixAndSuffix()? ???? ??[i]? ??[j]? ????? ????? ?????.
- ??? true? ?? ???? ??????.
isPrefixAndSuffix($str1, $str2):
- ? ??? ??? str1? str2? ????? ????? ?????.
- substr()? ???? str2? ???? ???? ???? ?? str1? ?????.
- ? ??? ?? true?? true? ????, ??? ??? false? ?????.
?? ???:
- ?? ???? O(n2 x m)???. ??? n? ?? ??? ???? m? ?? ??? ?? ?????. ??? ???. ?? ?? ??? substr() ?? ?????.
?? ??:
??? ?? ??? ??:
- ["a", "aba", "ababa", "aa"] -> ??: 4
- ["??", "??", "??", "??"] -> ??: 2
- ["abab", "ab"] -> ??: 0
? ???? ??? ?? ??? ????? ???? ???.
??? ??
? ???? ??? ???? GitHub?? ???? ??? ????? ???? ?? ?????? ???? ??? ???. ???? ??? ??? ? ??? ? ????!
??? ? ??? ???? ???? ?? ???????.
- ????
- ???
-
??? ???? ???? ???? ?? ???? ???? ??? ?? ?? ???? ???? ?? ??????.??
-
??? ???? ???? ???? ?? ???? ???? ??? ???? ?? ??????.??
? ??? ??? ? ??? ? ?? I? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!
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Undress AI Tool
??? ???? ??
Undresser.AI Undress
???? ?? ??? ??? ?? AI ?? ?
AI Clothes Remover
???? ?? ???? ??? AI ?????.
Clothoff.io
AI ? ???
Video Face Swap
??? ??? AI ?? ?? ??? ???? ?? ???? ??? ?? ????!
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SublimeText3 ??? ??
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???? 13.0.1 ???
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