您好,登錄后才能下訂單哦!
345. Reverse Vowels of a String
Write a function that takes a string as input and reverse only the vowels of a string.
Example 1:
Given s = "hello", return "holle".
Example 2:
Given s = "leetcode", return "leotcede".
Note:
The vowels does not include the letter "y".
思路:
找到元音字母,標(biāo)記位置,進(jìn)行置換。
代碼如下:
// vowels(元音字母)包括:a,e,i,o,u. class Solution { public: bool isVowels(char c) { char vowels[10] = {'a','e','i','o','u','A','E','I','O','U'}; for(int i = 0; i < 10; i++) { if(c == vowels[i]) { return true; break;//return 和 break在一起都有反應(yīng)么? } } return false; } string reverseVowels(string s) { vector<int> recordIndex; vector<char > str; for(int i = 0;i<s.size();i++) { str.push_back(s.at(i)); } for(int i = 0; i < str.size() ; i++) { if( isVowels(str[i]) ) { recordIndex.push_back(i); } } for(int i = 0 ; i < recordIndex.size() / 2 ; i++) { char left = str[recordIndex[i]]; char right = str[recordIndex[recordIndex.size() - 1 - i]]; str[recordIndex[i]] = right; str[recordIndex[recordIndex.size() - 1 - i]] = left; } s = ""; for(int i = 0 ; i < str.size() ; i++) { s.append(1,str[i]); } return s; } };
2016-08-08 10:52:10
免責(zé)聲明:本站發(fā)布的內(nèi)容(圖片、視頻和文字)以原創(chuàng)、轉(zhuǎn)載和分享為主,文章觀點(diǎn)不代表本網(wǎng)站立場(chǎng),如果涉及侵權(quán)請(qǐng)聯(lián)系站長(zhǎng)郵箱:is@yisu.com進(jìn)行舉報(bào),并提供相關(guān)證據(jù),一經(jīng)查實(shí),將立刻刪除涉嫌侵權(quán)內(nèi)容。