[#006] 344. Reverse String

• link:
  leetcode
  
  

• 解題思路:

  1. 對第一個字元與最後一個字元做 swap，對第二個字元與倒數第二個字元做 swap ... (依此類推)
     
     

• 程式碼:

/**
 * @param {character[]} s
 * @return {void} Do not return anything, modify s in-place instead.
 */
var reverseString = function(s) {
  let t = ''
  for (var i = 0; i < s.length / 2; i++) {
    t = s[i]
    s[i] = s[s.length - 1 - i]
    s[s.length - 1 - i] = t
  }
}

• 結果: