Day 8 - LeetCode 344. Reverse String

題目

Write a function that takes a string as input and returns the string reversed.

Example:
Given s = "hello", return "olleh".

翻譯

將一個字串反轉後回傳。
範例： s= "hello", return "olleh"

詳細參閱

https://skyyen999.gitbooks.io/-leetcode-with-javascript/content/questions/344md.html

---

Code

var reverseString = function(s) {

    let input_array = [];
    //es6 可以直接for 字串
    for (let input_string of s ) {
        //push 把值加入陣列最後面
        input_array.push(input_string);
    }
    //reverse 倒排陣列
    input_array.reverse();
    //join 陣列轉字串
    return input_array.join('');
};

//reverseString('hello')

Run

Run Code Result:

Your input

"hello"
Your answer

"olleh"
Expected answer

"olleh"

Runtime: 95 ms