Given a string s, reverse only all the vowels in the string and return it.
The vowels are 'a', 'e', 'i', 'o', and 'u', and they can appear in both lower and upper cases, more than once.
290Please respect copyright.ＰＥＮＡＮＡEiawziopin
Two Pointers
class Solution {290Please respect copyright.ＰＥＮＡＮＡ0van9n07ka
// Return true if the character is a vowel (case-insensitive)290Please respect copyright.ＰＥＮＡＮＡghiBeBveEv
// booleann(for ture or false), 創造"isVowel"(class), 命名(char c), and add aeiouAEIOU290Please respect copyright.ＰＥＮＡＮＡqQ1ADR0m2P
// 當 (char c) 不是vowel，return false/ 是vowel，return true
// * a||b = ab 全为 false 时，计算结果为 false，否则为 true。290Please respect copyright.ＰＥＮＡＮＡpMuqRC4KDs
boolean isVowel(char c) {290Please respect copyright.ＰＥＮＡＮＡcwBNZBkaxI
return c == 'a' || c == 'i' || c == 'e' || c == 'o' || c == 'u'290Please respect copyright.ＰＥＮＡＮＡFetukj6aCi
|| c == 'A' || c == 'I' || c == 'E' || c == 'O' || c == 'U';290Please respect copyright.ＰＥＮＡＮＡXUsJm4Ukns
}290Please respect copyright.ＰＥＮＡＮＡkYguXwrkvu
290Please respect copyright.ＰＥＮＡＮＡRf3V9fyfCl
// Function to swap characters at index x and y290Please respect copyright.ＰＥＮＡＮＡR9j1LcxwUw
void swap(char[] chars, int x, int y) {290Please respect copyright.ＰＥＮＡＮＡN8DnxAmMHD
char temp = chars[x];290Please respect copyright.ＰＥＮＡＮＡf0y44LZzlB
chars[x] = chars[y];290Please respect copyright.ＰＥＮＡＮＡvpJOXQHoKS
chars[y] = temp;290Please respect copyright.ＰＥＮＡＮＡ9nKfcdcW2o
}290Please respect copyright.ＰＥＮＡＮＡAlsuEpHPjx
290Please respect copyright.ＰＥＮＡＮＡn9oubW7k1i
public String reverseVowels(String s) {290Please respect copyright.ＰＥＮＡＮＡkzGm6zjmec
// 設定最左的字母是[0]290Please respect copyright.ＰＥＮＡＮＡk8Aznl2mUS
int start = 0;290Please respect copyright.ＰＥＮＡＮＡZtmOYJdcxL
// 設定最右的字母是[文字總長度-1].290Please respect copyright.ＰＥＮＡＮＡeGlzajSZ6C
int end = s.length() - 1;290Please respect copyright.ＰＥＮＡＮＡPUFtgCfHka
// 將 String 轉換為 char 數組，因為 String 在 Java 中是不可變的290Please respect copyright.ＰＥＮＡＮＡXK1v4l8RvZ
char[] sChar = s.toCharArray();290Please respect copyright.ＰＥＮＡＮＡiqgB1ADqYG
290Please respect copyright.ＰＥＮＡＮＡFG5Bitgbob
// While we still have characters to traverse290Please respect copyright.ＰＥＮＡＮＡhs6bv9ugug
// while the word more than one letter, do this function290Please respect copyright.ＰＥＮＡＮＡI1UnshiMGo
while (start < end) {290Please respect copyright.ＰＥＮＡＮＡuKboMpxpSK
// Find the leftmost vowel290Please respect copyright.ＰＥＮＡＮＡskXIJfRYrJ
// while start 少於 string length() 同時 [start] 不是vowel，return start ++290Please respect copyright.ＰＥＮＡＮＡc6ncgRXWLD
while (start < s.length () && !isVowel(sChar[start])) {290Please respect copyright.ＰＥＮＡＮＡm05anTUlBK
start++;290Please respect copyright.ＰＥＮＡＮＡbYQl6Mpn9C
}290Please respect copyright.ＰＥＮＡＮＡyOjJPQ48xd
// Find the rightmost vowel290Please respect copyright.ＰＥＮＡＮＡQvAM0iJZiC
// while end 大於 0 同時 [end] 不是vowel，return end --290Please respect copyright.ＰＥＮＡＮＡfI3T00igeX
while (end >= 0 && !isVowel(sChar[end])) {290Please respect copyright.ＰＥＮＡＮＡq7YAgWYGU0
end--;290Please respect copyright.ＰＥＮＡＮＡHwigKEOmnn
}290Please respect copyright.ＰＥＮＡＮＡ21KcKHdXdn
// Swap them if start is left of end290Please respect copyright.ＰＥＮＡＮＡpeLAkAtqpe
// swap function: (in what string, value 1, value 2), swap value 1 and 2290Please respect copyright.ＰＥＮＡＮＡzYesyQcojz
if (start < end) {290Please respect copyright.ＰＥＮＡＮＡZH6Qa4KRwX
swap(sChar, start++, end--);290Please respect copyright.ＰＥＮＡＮＡg1BqlpLjgQ
}290Please respect copyright.ＰＥＮＡＮＡ5e572F1DEt
}290Please respect copyright.ＰＥＮＡＮＡAeg975k3VY
290Please respect copyright.ＰＥＮＡＮＡSXDfvD1ffq
// Converting char array back to String290Please respect copyright.ＰＥＮＡＮＡLQciSi3FuL
// 顯示新的String290Please respect copyright.ＰＥＮＡＮＡbMcIUkijaK
return new String(sChar);290Please respect copyright.ＰＥＮＡＮＡ4fpabTPwa5
}290Please respect copyright.ＰＥＮＡＮＡzjWaM7pNTA
};
然後按「加至主畫面」