文、意如
題目精簡說明:
在同一個陣列中 s ，把元素從最後元素顯示到最前元素
原始題目:
Write a function that reverses a string. The input string is given as an array of characters s.
範例參考:
Example 1:
Input: s = ["h","e","l","l","o"]
Output: ["o","l","l","e","h"]
Example 2:
Input: s = ["H","a","n","n","a","h"]
Output: ["h","a","n","n","a","H"]
解題思路:
1.把元素從最後面讀出
2.讀到元素後馬上寫回原陣列
3.最後再把原來的陣列資料刪除
4.只留下自己寫入的元素
參考程式碼:
/**
* @param {character[]} s
* @return {void} Do not return anything, modify s in-place instead.
*/
var reverseString = function(s) {
a=[]
lens=s.length
for(i=lens-1;i>=0;i--){
s.push(s[i])
}
s.splice(0,lens)
};
執行結果:
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