Prime Number of Set Bits in Binary Representation 求某个数是否是素数(一个数只有两个因数1和它本身,则是素数。1不是素数): 法一:暴力法 就是从2开始到n - 1依次判断,n % i == 0 则不是素数 法二:筛选 一个数如果是合数,那么可以因式分解为两个数,一个大于等于sqrt(n), 另一个小于等于sqrt(n...
https://leetcode.com/problems/prime-number-of-set-bits-in-binary-representation/discuss/113225/Short-C++-12-ms https://leetcode.com/problems/prime-number-of-set-bits-in-binary-representation/discuss/113227/JavaC++-Clean-Code LeetCode All in One 题目讲解汇总(持续更新中...)...
package leetcode import "math/bits" func countPrimeSetBits(L int, R int) int { counter := 0 for i := L; i <= R; i++ { if isPrime(bits.OnesCount(uint(i))) { counter++ } } return counter } func isPrime(x int) bool { return x == 2 || x == 3 || x == 5 ...
int countPrimeSetBits(int L, int R) { int res = 0; unordered_set<int> primes{2, 3, 5, 7, 11, 13, 17, 19}; for(int i=L; i<=R; i++) { int bits = 0; int tmp = i; while(tmp){ if(tmp&1 == 1) bits++; tmp >>= 1; } res += primes.count(bits); } return ...
LeetCode-Prime Number of Set Bits in Binary Representation,LeetCodeJavaPrimeNumberofSetBitsinBinaryRepresentation
Recall that the number of set bits an integer has is the number of 1's present when written in binary.For example, 21 written in binary is 10101, which has 3 set bits.Example 1:Input: left = 6, right = 10 Output: 4 Explanation: 6 -> 110 (2 set bits, 2 is prime) 7 -> 111...
Can you solve this real interview question? Prime Number of Set Bits in Binary Representation - Given two integers left and right, return the count of numbers in the inclusive range [left, right] having a prime number of set bits in their binary represen
题目链接 Write a function that takes an unsigned integer and return the number of ‘1’ bits it has (also known as the Hamming weight). Example 1: Input: 00000000000000000000000000001011 Output:... 查看原文 LeetCode:461 Hamming Distance 一:原题题目 The Hamming distance between two integers ...
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题目:https://leetcode.com/contest/leetcode-weekly-contest-53/problems/number-of-distinct-islands/ 题意:给你一个01图,让你找出有多少不同的联通块(相同意为可以通过平移得到) 思路:BFS保存每次走的方向 代码: #include<bits/stdc++.h> using namespace std; #define MP make_pair int dx[] = ...