反转字符串 JavaScript 中的元音
javascriptweb developmentfront end technologyobject oriented programming
我们需要编写一个 JavaScript 函数，该函数以字符串作为输入，并仅反转字符串的元音。
例如 −
如果输入字符串是 −
const str = 'Hello';
那么输出应该是 −
const output = 'Holle';
其代码为 −
const str = 'Hello'; const reverseVowels = (str = '') => {
const vowels = new Set(['a','e','i','o','u','A','E','I','O','U']);
let left = 0, right = str.length-1;
let foundLeft = false, foundRight = false;
str = str.split(""); while(left < right){
if(vowels.has(str[left])){
foundLeft = true
};
if(vowels.has(str[right])){
foundRight = true
};
if(foundLeft && foundRight){
[str[left],str[right]] = [str[right],str[left]];
foundLeft = false; foundRight = false;
}; if(!foundLeft) {
left++
}; if(!foundRight) {
right--
};
};
return str.join("");
};
console.log(reverseVowels(str));
控制台中的输出将是 −
Holle
