Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward. Example 1: Input:121Output:true Example 2: Input:-121Output:falseExplanation:From left to right, it reads -121. From right to left, it becomes 121-. Therefore it is not ...
Can you solve this real interview question? Palindrome Number - Given an integer x, return true if x is a palindrome, and false otherwise. Example 1: Input: x = 121 Output: true Explanation: 121 reads as 121 from left to right and from right to lef
Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward. Example 1: Input:121Output:true Example 2: Input:-121Output:falseExplanation:Fromlefttoright, it reads -121.Fromrighttoleft, it becomes121-. Therefore itisnota palindrome. Examp...
public boolean isPalindrome(int x) { if(x < 0 || (x % 10 == 0 && x != 0)) return false; int revertedNumber = 0; while(x > revertedNumber) { revertedNumber = revertedNumber * 10 + x % 10; x /= 10; } return x == revertedNumber || x == revertedNumber/10; } 时间复...
【Leetcode】Palindrome Number https://leetcode.com/problems/palindrome-number/ 题目: Determine whether an integer is a palindrome. Do this without extra space. Some hints: Could negative integers be palindromes? (ie, -1) If you are thinking of converting the integer to string, note the ...
leetcode-cn执行: 执行用时:28 ms, 在所有 Go 提交中击败了26.90%的用户 内存消耗:5.3 MB, 在所有 Go 提交中击败了19.58%的用户 leetcode执行: Runtime: 28 ms, faster than 21.90% of Go online submissions for Palindrome Number. Memory Usage: 5.6 MB, less than 14.02% of Go online submissions ...
除法之后保留整数结果 - Floor division - division that results into whole number adjusted to the left in the number linereturnx==y## 改进版## LeetCode 9, 回文数,不转换为字符串的写法1:## 这个解法的详细解读,可参考下一个解法classSolution:defisPalindrome(self,x:int)->bool:ifx<0:returnFalse...
funcisPalindrome(_ x:Int)->Bool{var str=String()letchas=String(x).reversed()forcinchas{str.append(c)}ifString(x)==str{returntrue}returnfalse} 【思路2】 1、从x的各位到最高位 依次遍历得到一个新数值,判断两个数值是否相等 2、时间复杂度O(log10ºn),(以十为底n的对数)因为每次都会除以10...
LeetCode NO. 9 Palindrome Number LeetCode 第9题 回文数 DIFFICULTY(难度) EASY 容易 DESCRIPTION(题面) Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward. 判断一个整数是否是回文数,回文数就是正读反读都相同的数字 ...
【摘要】 这是一道关于回文判断的LeetCode题目,希望对您有所帮助。 题目概述: Determine whether an integer is a palindrome. Do this without extra space. 题目分析: 判断数字是否是回文 例如121、656、3443 方法有很多,正着看和到着看两数相同;当然负数显然不是回文 ...