Class Solution
- java.lang.Object
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- g0701_0800.s0762_prime_number_of_set_bits_in_binary_representation.Solution
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public class Solution extends Object
762 - Prime Number of Set Bits in Binary Representation.Easy
Given two integers
leftandright, return the count of numbers in the inclusive range[left, right]having a prime number of set bits in their binary representation.Recall that the number of set bits an integer has is the number of
1’s present when written in binary.- For example,
21written in binary is10101, which has3set bits.
Example 1:
Input: left = 6, right = 10
Output: 4
Explanation:
6 -> 110 (2 set bits, 2 is prime) 7 -> 111 (3 set bits, 3 is prime) 8 -> 1000 (1 set bit, 1 is not prime) 9 -> 1001 (2 set bits, 2 is prime) 10 -> 1010 (2 set bits, 2 is prime) 4 numbers have a prime number of set bits.Example 2:
Input: left = 10, right = 15
Output: 5
Explanation:
10 -> 1010 (2 set bits, 2 is prime) 11 -> 1011 (3 set bits, 3 is prime) 12 -> 1100 (2 set bits, 2 is prime) 13 -> 1101 (3 set bits, 3 is prime) 14 -> 1110 (3 set bits, 3 is prime) 15 -> 1111 (4 set bits, 4 is not prime) 5 numbers have a prime number of set bits.Constraints:
1 <= left <= right <= 1060 <= right - left <= 104
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Constructor Summary
Constructors Constructor Description Solution()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description intcountPrimeSetBits(int left, int right)
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