9. Palindrome Number 回文數的判斷
阿新 • • 發佈:2018-05-01
一句話 left 回文數的判斷 思路 num pre 無聊 分析 put
[抄題]:
Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward.
Example 1:
Input: 121 Output: true
Example 2:
Input: -121 Output: false Explanation: From left to right, it reads -121. From right to left, it becomes 121-. Therefore it is not a palindrome.
Example 3:
Input: 10 Output: false Explanation: Reads 01 from right to left. Therefore it is not a palindrome.
[暴力解法]:
時間分析:
空間分析:
[優化後]:
時間分析:
空間分析:
[奇葩輸出條件]:
[奇葩corner case]:
[思維問題]:
[一句話思路]:
當個無聊的復制粘貼吧
[輸入量]:空: 正常情況:特大:特小:程序裏處理到的特殊情況:異常情況(不合法不合理的輸入):
[畫圖]:
[一刷]:
[二刷]:
[三刷]:
[四刷]:
[五刷]:
[五分鐘肉眼debug的結果]:
[總結]:
[復雜度]:Time complexity: O() Space complexity: O()
[英文數據結構或算法,為什麽不用別的數據結構或算法]:
[關鍵模板化代碼]:
[其他解法]:
[Follow Up]:
[LC給出的題目變變變]:
[代碼風格] :
9. Palindrome Number 回文數的判斷