Given a number N, the task is to find the count of X such that N XOR X == N OR X, where 0<=X<=N
Input: N = 5
For N = 5,
5 XOR 2 == 5 OR 2
5 XOR 0 == 5 OR 0
Thus, count is 2.
Input: N = 7
For N = 7,
7 XOR 0 == 7 OR 0
Thus, count is 1.
Approach: The idea is to convert given number to binary and then count the unset bits in it. 2^count gives us the number of X such that N XOR X == N OR X.
Below is the implementation of the above approach:
- Count numbers whose sum with x is equal to XOR with x
- Count numbers whose difference with N is equal to XOR with N
- Count smaller numbers whose XOR with n produces greater value
- Find an N x N grid whose xor of every row and column is equal
- Count of numbers whose sum of increasing powers of digits is equal to the number itself
- Count of N digit Numbers whose sum of every K consecutive digits is equal
- Count of N digit Numbers whose sum of every K consecutive digits is equal | Set 2
- Count of binary strings of length N having equal count of 0's and 1's and count of 1's ≥ count of 0's in each prefix substring
- Count smaller values whose XOR with x is greater than x
- Count all pairs of adjacent nodes whose XOR is an odd number
- Count numbers < = N whose difference with the count of primes upto them is > = K
- XOR of two numbers after making length of their binary representations equal
- Equal Sum and XOR of three Numbers
- Count minimum bits to flip such that XOR of A and B equal to C
- Count of elements which are equal to the XOR of the next two elements
- Find a number X such that (X XOR A) is minimum and the count of set bits in X and B are equal
- Count subarrays with sum equal to its XOR value
- Count ways to generate pairs having Bitwise XOR and Bitwise AND equal to X and Y respectively
- Find XOR of two number without using XOR operator
- Given a set, find XOR of the XOR's of all subsets.
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