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.
340Please respect copyright.ＰＥＮＡＮＡAs3NVLj0qt
Two Pointers
class Solution {340Please respect copyright.ＰＥＮＡＮＡhjpCR5PnwG
// Return true if the character is a vowel (case-insensitive)340Please respect copyright.ＰＥＮＡＮＡLAIT5aqUWg
// booleann(for ture or false), 創造"isVowel"(class), 命名(char c), and add aeiouAEIOU340Please respect copyright.ＰＥＮＡＮＡzuTf5cvV90
// 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。340Please respect copyright.ＰＥＮＡＮＡyqGpwuXxjs
boolean isVowel(char c) {340Please respect copyright.ＰＥＮＡＮＡfmvmlV5WbR
return c == 'a' || c == 'i' || c == 'e' || c == 'o' || c == 'u'340Please respect copyright.ＰＥＮＡＮＡPY2HBCWctZ
|| c == 'A' || c == 'I' || c == 'E' || c == 'O' || c == 'U';340Please respect copyright.ＰＥＮＡＮＡwB4I6TcPZh
}340Please respect copyright.ＰＥＮＡＮＡhxfLGCqdpc
340Please respect copyright.ＰＥＮＡＮＡ8dyX7ys4MM
// Function to swap characters at index x and y340Please respect copyright.ＰＥＮＡＮＡOiOQSUR4PP
void swap(char[] chars, int x, int y) {340Please respect copyright.ＰＥＮＡＮＡ6BWPySlnJ9
char temp = chars[x];340Please respect copyright.ＰＥＮＡＮＡUTnSJlgjTZ
chars[x] = chars[y];340Please respect copyright.ＰＥＮＡＮＡgkM4dmbsse
chars[y] = temp;340Please respect copyright.ＰＥＮＡＮＡTRuk6z9UY0
}340Please respect copyright.ＰＥＮＡＮＡ6lYuPvZK0I
340Please respect copyright.ＰＥＮＡＮＡXmTNC0b7tH
public String reverseVowels(String s) {340Please respect copyright.ＰＥＮＡＮＡ9royh4FiO0
// 設定最左的字母是[0]340Please respect copyright.ＰＥＮＡＮＡzEWrx3qgXh
int start = 0;340Please respect copyright.ＰＥＮＡＮＡDRuBkdqQli
// 設定最右的字母是[文字總長度-1].340Please respect copyright.ＰＥＮＡＮＡiFGsoW6Py3
int end = s.length() - 1;340Please respect copyright.ＰＥＮＡＮＡxW19T5FTaD
// 將 String 轉換為 char 數組，因為 String 在 Java 中是不可變的340Please respect copyright.ＰＥＮＡＮＡo6bjqIlkY3
char[] sChar = s.toCharArray();340Please respect copyright.ＰＥＮＡＮＡFnOHd83c3G
340Please respect copyright.ＰＥＮＡＮＡjQwi0itO7M
// While we still have characters to traverse340Please respect copyright.ＰＥＮＡＮＡpPI2XzSIXe
// while the word more than one letter, do this function340Please respect copyright.ＰＥＮＡＮＡBfvShtJZWN
while (start < end) {340Please respect copyright.ＰＥＮＡＮＡSAfgAiIVTk
// Find the leftmost vowel340Please respect copyright.ＰＥＮＡＮＡxUfYxOfp7I
// while start 少於 string length() 同時 [start] 不是vowel，return start ++340Please respect copyright.ＰＥＮＡＮＡVulOPSLvYH
while (start < s.length () && !isVowel(sChar[start])) {340Please respect copyright.ＰＥＮＡＮＡTbuzBkiYg2
start++;340Please respect copyright.ＰＥＮＡＮＡlNXH6OhbzD
}340Please respect copyright.ＰＥＮＡＮＡYpFChdP9Lb
// Find the rightmost vowel340Please respect copyright.ＰＥＮＡＮＡ8NQMo2kaqm
// while end 大於 0 同時 [end] 不是vowel，return end --340Please respect copyright.ＰＥＮＡＮＡ3jbcmIoJ3G
while (end >= 0 && !isVowel(sChar[end])) {340Please respect copyright.ＰＥＮＡＮＡArKLjUMdYT
end--;340Please respect copyright.ＰＥＮＡＮＡuh4IAb9zOW
}340Please respect copyright.ＰＥＮＡＮＡ9JlCeKdkSI
// Swap them if start is left of end340Please respect copyright.ＰＥＮＡＮＡN7eBVCMd6I
// swap function: (in what string, value 1, value 2), swap value 1 and 2340Please respect copyright.ＰＥＮＡＮＡ4AgPqTGKN8
if (start < end) {340Please respect copyright.ＰＥＮＡＮＡ7yYNiDcjXL
swap(sChar, start++, end--);340Please respect copyright.ＰＥＮＡＮＡ2JydIliji1
}340Please respect copyright.ＰＥＮＡＮＡ8r1icTyClz
}340Please respect copyright.ＰＥＮＡＮＡEKSwklRZUT
340Please respect copyright.ＰＥＮＡＮＡbQ1TsHqij0
// Converting char array back to String340Please respect copyright.ＰＥＮＡＮＡHlfmj40mqV
// 顯示新的String340Please respect copyright.ＰＥＮＡＮＡyKUJzY1kfJ
return new String(sChar);340Please respect copyright.ＰＥＮＡＮＡwoFklnJmEL
}340Please respect copyright.ＰＥＮＡＮＡmZHuWbi6xe
};
然後按「加至主畫面」