https://leetcode.com/problems/minimum-number-of-operations-to-make-array-xor-equal-to-k/description/

Bit diff between k and nums xor #medium #bit_manipulation

https://leetcode.com/problems/number-of-wonderful-substrings/description/

Count substrings with at most one odd frequency #medium #bit_manipulation

https://leetcode.com/problems/count-triplets-that-can-form-two-arrays-of-equal-xor/description/

Number (i,j,k) where xor arr[i..j] = xor arr[j..k] #medium #bit_manipulation