defisPowerOfTwo(n):ifn&(n-1):returnFalsereturnTrueclassSolution(object):defhammingWeight(self, n):""":type n: int :rtype: int"""ifn==0:return0elifn<=2:return1ifisPowerOfTwo(n): #说明二进制数有且仅有一个1啦,所以消去了一个1后,if为Falsereturn1else: c=0foriinrange(32): c+=...
输出: [0,1,1,2,1,2] 进阶: 给出时间复杂度为O(n*sizeof(integer))的解答非常容易。但你可以在线性时间O(n)内用一趟扫描做到吗? 要求算法的空间复杂度为O(n)。 你能进一步完善解法吗?要求在C++或任何其他语言中不使用任何内置函数(如 C++ 中的 __builtin_popcount)来执行此操作。 来源:力扣(LeetCo...
(Notes: 📘 means you need to buy a book from Leetcode) #TitleSource CodeExplanationDifficulty 754 Cracking the Safe Hard 753 Open the Lock Medium 752 IP to CIDR Medium 751 Number Of Corner Rectangles 📘 Medium 750 Contain Virus Hard 749 Shortest Completing Word Medium 748 Largest Number ...
find-first-and-last-position-of-element-in-sorted-array 这个考的是二分法中的while跳出条件和left、right变化逻辑,本题是找出左右边界 source from:https://leetcode-cn.com/problems/find-first-and-last-position-of-element-in-sorted-array/ Search Insert Position source from:https://leetcode-cn.com...
The given number is guaranteed to fit within the range of a 32-bit signed integer. Youmust not useanymethod provided by the librarywhich converts/formats the number to hex directly. Example 1: Input:26 Output:"1a" Example 2: Input:-1 ...
LeetCode 0177 - Nth Highest Salary Nth Highest Salary Desicription Write a SQL query to get the nth highest salary from the Employee table...2 | 200 | | 3 | 300 | +---+---+ For example, given the above Employee table, the nth highest...If there is no nth highest salary, then...
在fpdf中显示"Yes"和"No"而不是二进制的1和0,可以通过自定义函数来实现。以下是一个示例代码: ```python from fpdf import FPDF class CustomP...
(M) Letter Combinations of a Phone Number(E) Number of 1 Bits // solution 1 from 光头哥publicList<String>readBinaryWatch1(intnum){List<String>times=newArrayList<>();for(inth=0;h<12;h++)for(intm=0;m<60;m++)if(Integer.bitCount(h*64+m)==num)times.add(String.format("%d:%02d",...
但是又的时候如果没有配置好的话,如果想要返回Map的json对象会报:No converter found for return value of type: class java.ut... kaizi1992 0 831 LeetCode 89 Gray Code 2019-12-06 14:54 −[题目](https://leetcode.com/problems/gray-code/) 格雷码 000 001 011 010 110 111 101 就是相邻的两...
Given a non-negative integernrepresenting the total number of bits in the code, print the sequence of gray code. A gray code sequence must begin with 0. Example 1: Input: 2 Output:[0,1,3,2]Explanation: 00 - 0 01 - 1 11 - 3 ...