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.
572Please respect copyright.ＰＥＮＡＮＡOyCiWalt8z
Two Pointers
class Solution {572Please respect copyright.ＰＥＮＡＮＡQtw117rZJK
// Return true if the character is a vowel (case-insensitive)572Please respect copyright.ＰＥＮＡＮＡZsu4azrzUc
// booleann(for ture or false), 創造"isVowel"(class), 命名(char c), and add aeiouAEIOU572Please respect copyright.ＰＥＮＡＮＡ805H1yskiA
// 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。572Please respect copyright.ＰＥＮＡＮＡdwtsqnyrT3
boolean isVowel(char c) {572Please respect copyright.ＰＥＮＡＮＡUbC18uWcs4
return c == 'a' || c == 'i' || c == 'e' || c == 'o' || c == 'u'572Please respect copyright.ＰＥＮＡＮＡchQFPYR2Ha
|| c == 'A' || c == 'I' || c == 'E' || c == 'O' || c == 'U';572Please respect copyright.ＰＥＮＡＮＡ65CEVi2alH
}572Please respect copyright.ＰＥＮＡＮＡ3mYripFiq9
572Please respect copyright.ＰＥＮＡＮＡEBG8XJZhrc
// Function to swap characters at index x and y572Please respect copyright.ＰＥＮＡＮＡoC50Rr0Npo
void swap(char[] chars, int x, int y) {572Please respect copyright.ＰＥＮＡＮＡFV3IF3qLSF
char temp = chars[x];572Please respect copyright.ＰＥＮＡＮＡjnoGp1GCAI
chars[x] = chars[y];572Please respect copyright.ＰＥＮＡＮＡmR4YmsHYLi
chars[y] = temp;572Please respect copyright.ＰＥＮＡＮＡATR9Lq5L36
}572Please respect copyright.ＰＥＮＡＮＡOOxSrgyo7v
572Please respect copyright.ＰＥＮＡＮＡmM3nCdhWMG
public String reverseVowels(String s) {572Please respect copyright.ＰＥＮＡＮＡlKJvOndn36
// 設定最左的字母是[0]572Please respect copyright.ＰＥＮＡＮＡKU5Q40KD9b
int start = 0;572Please respect copyright.ＰＥＮＡＮＡ4xUvrBRYHg
// 設定最右的字母是[文字總長度-1].572Please respect copyright.ＰＥＮＡＮＡG4DAPnAD2I
int end = s.length() - 1;572Please respect copyright.ＰＥＮＡＮＡ2rm7UJXT0V
// 將 String 轉換為 char 數組，因為 String 在 Java 中是不可變的572Please respect copyright.ＰＥＮＡＮＡ4iS6QdnOk3
char[] sChar = s.toCharArray();572Please respect copyright.ＰＥＮＡＮＡTR4nzyCkkI
572Please respect copyright.ＰＥＮＡＮＡBMRGRurEKc
// While we still have characters to traverse572Please respect copyright.ＰＥＮＡＮＡE35BtIDaFU
// while the word more than one letter, do this function572Please respect copyright.ＰＥＮＡＮＡipQn7QPSEI
while (start < end) {572Please respect copyright.ＰＥＮＡＮＡm2fp9azDH0
// Find the leftmost vowel572Please respect copyright.ＰＥＮＡＮＡ4SndB9ctLT
// while start 少於 string length() 同時 [start] 不是vowel，return start ++572Please respect copyright.ＰＥＮＡＮＡ45QZD8Sa8Z
while (start < s.length () && !isVowel(sChar[start])) {572Please respect copyright.ＰＥＮＡＮＡgfF0IoZn74
start++;572Please respect copyright.ＰＥＮＡＮＡ6jZcMmfyCg
}572Please respect copyright.ＰＥＮＡＮＡ4lqL3ewqgR
// Find the rightmost vowel572Please respect copyright.ＰＥＮＡＮＡX0IzKhscBw
// while end 大於 0 同時 [end] 不是vowel，return end --572Please respect copyright.ＰＥＮＡＮＡIKvwkWNcZH
while (end >= 0 && !isVowel(sChar[end])) {572Please respect copyright.ＰＥＮＡＮＡK1HxW69bZW
end--;572Please respect copyright.ＰＥＮＡＮＡKwWt4Vdp49
}572Please respect copyright.ＰＥＮＡＮＡUkLnexipmM
// Swap them if start is left of end572Please respect copyright.ＰＥＮＡＮＡFjliK72PZr
// swap function: (in what string, value 1, value 2), swap value 1 and 2572Please respect copyright.ＰＥＮＡＮＡfymgoz7Nvj
if (start < end) {572Please respect copyright.ＰＥＮＡＮＡ8NyeHH7GpN
swap(sChar, start++, end--);572Please respect copyright.ＰＥＮＡＮＡHDcOOMhd9u
}572Please respect copyright.ＰＥＮＡＮＡCrPbGdALRy
}572Please respect copyright.ＰＥＮＡＮＡJYGfiFPxJt
572Please respect copyright.ＰＥＮＡＮＡsDO1evvRCA
// Converting char array back to String572Please respect copyright.ＰＥＮＡＮＡkHXblXbRfy
// 顯示新的String572Please respect copyright.ＰＥＮＡＮＡEDEfiPuHKV
return new String(sChar);572Please respect copyright.ＰＥＮＡＮＡ0CvbLzm3Ma
}572Please respect copyright.ＰＥＮＡＮＡWz5q5lukTs
};
and then Add to home screen.