LeetCode 9 的题目是 “Palindrome Number”(回文数)。题目要求如下: 题目描述: 给定一个整数 x,判断它是否是一个回文数。回文数是指正着读和倒着读都一样的整数。 示例: 输入: 121 输出: true 输入: -121 输出: false 解释: 倒着读是 121-,所以不是回文数。可见,所有负数都不是回文数字。 输入: 10...
代码: boolisPalindrome(intx) {if(x<0)returnfalse;if(x==0)returntrue;inta[100],i,j,sum;for(i=0;x!=0;i++) { a[i]=x%10; x/=10; } sum=i; i--;if(a[0]==0)returnfalse;for(j=0;j<sum/2;j++,i--)if(a[j]!=a[i])returnfalse;returntrue; }...
leetcode - Palindrome Number Determine whether an integer is a palindrome. Do this without extra space. click to show spoilers. 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. Yo...
代码如下: ## LeetCode 9, 回文数,简单写法1:classSolution:defisPalindrome(self,x:int)->bool:y=str(x)## 转换为字符串z=y[::-1]## 对字符串进行反转returny==z 解法2. 简单写法的精简版 转换和反转的操作,都可以放入return语句。 ## LeetCode 9, 回文数,简单写法1的精简版classSolution:defisPa...
237Delete Node in a Linked ListC 236Lowest Common Ancestor of a Binary TreeC++ 235Lowest Common Ancestor of a Binary Search TreeC 234Palindrome Linked ListC 233Number of Digit OneC 232Implement Queue using StacksC 231Power of TwoC 230Kth Smallest Element in a BSTC ...
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....
409.Longest-Palindrome (M) 447.Number-of-Boomerangs (E+) 438.Find-All-Anagrams-in-a-String (M+) 356.Line-Reflection (H-) 594.Longest-Harmonious-Subsequence (M+) 532.K-diff-Pairs-in-an-Array (E+) 446.Arithmetic-Slices-II-Subsequence (H) 128.Longest-Consecutive-Sequence (H-) 753.Cr...
"race a car" is not a palindrome. Note: Have you consider that the string might be empty? This is a good question to ask during an interview. For the purpose of this problem, we define empty string as valid palindrome. 【解答】注意大小写,注意数字和字母都要算有效字符。 代码语言:javascri...
bool isPalindrome(int x) { if(x < 0) return false; char buff[32] = {0}; // linux 下没有itoa函数,使用sprintf // itoa(x, buff, 10); sprintf(buff, "%d", x); int len = strlen(buff); for(int i = 0; i <= len/2; ++i) ...
Except for the first two numbers, each subsequent number in the sequence must be the sum of the preceding two. For example: "112358" is an additive number because the digits can form an additive sequence: 1, 1, 2, 3, 5, 8. 代码语言:javascript 代码运行次数:0 运行 复制 1 + 1 ...