Palindrome Number 回文数(Easy)(JAVA) 【LeetCode】 9. Palindrome Number 回文数(Easy)(JAVA) 题目地址: https://leetcode.com/problems/palindrome-number/ 题目描述: Determine whether an integer is a palindrome. An integer is a palindrome when it reads the ......
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...
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 ...
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...
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 restriction of using extra space....
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 for Palindrome Number. 1. 2. 3. 4. 5. 6. 7....
相关的基础题:LeetCode 7,将整数进行分解 题目: 所谓回文数 Palindrome Number,即从左边开始读或从右边开始读,两者结果一致。判断的目标数字为整数,包括负数。 比如12321,123321,或者 3,都是回文数。 -12321不是回文数;-1也不是回文数。 解法1. 简单解法:将整数转换为字符串 ...
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 ...
Leetcode 321. Create Maximum Number sdncomversion博客 文章作者:Tyan 博客:noahsnail.com | CSDN | 简书 Tyan 2021/02/04 2980 LeetCode 0336 - Palindrome Pairs concatenationdistinctlistpalindromeunique Given a list of unique words, find all pairs of distinct indices (i, j) in the given list, so...