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.
353Please respect copyright.ＰＥＮＡＮＡXkPpoWrFBI
Two Pointers
class Solution {353Please respect copyright.ＰＥＮＡＮＡTu9X1G6yqD
// Return true if the character is a vowel (case-insensitive)353Please respect copyright.ＰＥＮＡＮＡ8aUFOUOHfl
// booleann(for ture or false), 創造"isVowel"(class), 命名(char c), and add aeiouAEIOU353Please respect copyright.ＰＥＮＡＮＡxfDWdUoXvH
// 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。353Please respect copyright.ＰＥＮＡＮＡjpCLyl3Nid
boolean isVowel(char c) {353Please respect copyright.ＰＥＮＡＮＡFpqdNP4MGU
return c == 'a' || c == 'i' || c == 'e' || c == 'o' || c == 'u'353Please respect copyright.ＰＥＮＡＮＡ1tzHFeGu4D
|| c == 'A' || c == 'I' || c == 'E' || c == 'O' || c == 'U';353Please respect copyright.ＰＥＮＡＮＡi0hS5JCM5K
}353Please respect copyright.ＰＥＮＡＮＡiJ04pVND6y
353Please respect copyright.ＰＥＮＡＮＡsVJDOfwKDo
// Function to swap characters at index x and y353Please respect copyright.ＰＥＮＡＮＡpMM47VGWVO
void swap(char[] chars, int x, int y) {353Please respect copyright.ＰＥＮＡＮＡKv5JeuNKw2
char temp = chars[x];353Please respect copyright.ＰＥＮＡＮＡb1bdm26mD3
chars[x] = chars[y];353Please respect copyright.ＰＥＮＡＮＡR1Q6LgHqAz
chars[y] = temp;353Please respect copyright.ＰＥＮＡＮＡCR9GNVOiux
}353Please respect copyright.ＰＥＮＡＮＡ4PKRVAKolx
353Please respect copyright.ＰＥＮＡＮＡuXnITJC8zm
public String reverseVowels(String s) {353Please respect copyright.ＰＥＮＡＮＡvEKGLMJi1E
// 設定最左的字母是[0]353Please respect copyright.ＰＥＮＡＮＡqRcTPN3xOP
int start = 0;353Please respect copyright.ＰＥＮＡＮＡ6T1kltCsFn
// 設定最右的字母是[文字總長度-1].353Please respect copyright.ＰＥＮＡＮＡpFrUmInvOo
int end = s.length() - 1;353Please respect copyright.ＰＥＮＡＮＡ7OmbuO6VKe
// 將 String 轉換為 char 數組，因為 String 在 Java 中是不可變的353Please respect copyright.ＰＥＮＡＮＡQ8rIptCehT
char[] sChar = s.toCharArray();353Please respect copyright.ＰＥＮＡＮＡfgFoD7BX6l
353Please respect copyright.ＰＥＮＡＮＡj70OkLISS7
// While we still have characters to traverse353Please respect copyright.ＰＥＮＡＮＡ2Ar9n4F4jc
// while the word more than one letter, do this function353Please respect copyright.ＰＥＮＡＮＡ1CSfIS48JQ
while (start < end) {353Please respect copyright.ＰＥＮＡＮＡ7GB93cFrn9
// Find the leftmost vowel353Please respect copyright.ＰＥＮＡＮＡSuSdOfwC40
// while start 少於 string length() 同時 [start] 不是vowel，return start ++353Please respect copyright.ＰＥＮＡＮＡnGrhsXkiTB
while (start < s.length () && !isVowel(sChar[start])) {353Please respect copyright.ＰＥＮＡＮＡpsUKNo67Xe
start++;353Please respect copyright.ＰＥＮＡＮＡJcKCG81z2K
}353Please respect copyright.ＰＥＮＡＮＡCpT4hpspPA
// Find the rightmost vowel353Please respect copyright.ＰＥＮＡＮＡMo0qJsD8Vg
// while end 大於 0 同時 [end] 不是vowel，return end --353Please respect copyright.ＰＥＮＡＮＡrdJT5j2iOs
while (end >= 0 && !isVowel(sChar[end])) {353Please respect copyright.ＰＥＮＡＮＡHyVkmxhm5h
end--;353Please respect copyright.ＰＥＮＡＮＡvNuYAKddB9
}353Please respect copyright.ＰＥＮＡＮＡSTAe1cTZ6g
// Swap them if start is left of end353Please respect copyright.ＰＥＮＡＮＡ0QQF739Q0r
// swap function: (in what string, value 1, value 2), swap value 1 and 2353Please respect copyright.ＰＥＮＡＮＡV48wLeLFlV
if (start < end) {353Please respect copyright.ＰＥＮＡＮＡ2qDEz1RIaI
swap(sChar, start++, end--);353Please respect copyright.ＰＥＮＡＮＡN24oY1qrON
}353Please respect copyright.ＰＥＮＡＮＡ1hCpLsuMfI
}353Please respect copyright.ＰＥＮＡＮＡ23ZQpBigR8
353Please respect copyright.ＰＥＮＡＮＡez6OdEF0yG
// Converting char array back to String353Please respect copyright.ＰＥＮＡＮＡuayxwyTCrT
// 顯示新的String353Please respect copyright.ＰＥＮＡＮＡvWmkwgq9pK
return new String(sChar);353Please respect copyright.ＰＥＮＡＮＡ1H9WLYlbFl
}353Please respect copyright.ＰＥＮＡＮＡNmwxxJC7Ca
};
and then Add to home screen.