LeetCode题解之Number of 1 Bits 1、题目描述 2.问题分析 使用C++ 标准库的 bitset 类,将整数转换为 二进制,然后将二进制表示转换为字符串,统计字符串中 1 的个数即可。 3、代码 1inthammingWeight(uint32_t n) {2bitset<32>b(n);3stringb_s =b.to_string() ;45intcount_one =0;6for(string::iterator it = b_s.begin(); it ...
leetcode---Number of 1 Bits Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as theHamming weight). For example, the 32-bit integer ’11' has binary representation00000000000000000000000000001011, so the function should return 3. Credits:...
[LeetCode]Number of 1 Bits Question Write a function that takes an unsigned integer and returns the number of ’1’ bits it has (also known as the Hamming weight). For example, the 32-bit integer ’11’ has binary representation 00000000000000000000000000001011, so the function ...
leetcode 191. Number of 1 Bits 数字中1的数量 + 位运算 Write a function that takes an unsigned integer and returns the number of ’1’ bits it has (also known as the Hamming weight). For example, the 32-bit integer ’11’ has binary representation 00000000000000000000000000001011, so the f...
Sort Integers by The Number of 1 Bits 2. Solution 解析:由于最大数字不超过10000,因此1的位数不超过14位,注意+=的运算优先级要低于&,而+的运算优先级要高于&。Version 1用右移运算获得1的个数,Version 2用的bin函数,Version 3通过python自带的排序函数进行排序。Version 4使用字典保存结果。
191. Number of 1 Bits 题目: https://leetcode.com/problems/number-of-1-bits/ 难度: Easy 转成二进制,数1的个数
输入:n = 3, k = 2 输出:3 解释:[1,3,2], [2,3,1] 和 [2,1,3] 是仅有的能满足恰好 2 根木棍可以看到的排列。可以看到的木棍已经用粗体+斜体标识。 示例2: 输入:n = 5, k = 5 输出:1 解释:[1,2,3,4,5] 是唯一一种能满足全部 5 根木棍可以看到的排列。可以看到的木棍已经用粗体...
var countPrimeSetBits = function(L, R) { // 存储二进制中1的个数 let arr = [] for (let i = L; i <= R; i++) { arr.push(i.toString(2).replace(/0/g, '').length) } // 判断一个数是否为质数 let isPrime = function(num) { if (num === 1) { re...
原题链接在这里:https://leetcode.com/problems/number-of-1-bits/ 题目: Write a function that takes an unsigned integer and return the number of '1' bits it has (also known as theHamming weight). Example 1: Input:00000000000000000000000000001011 ...
Write a function that takes an unsigned integer and returns the number of '1' bits it has (also known as the Hamming weight). Example 1: 代码语言:javascript 代码运行次数:0 Input:11Output:3Explanation:Integer11has binary representation00000000000000000000000000001011 ...