Leetcode doubt on hard

#1

How can bitwise operators be implemented here??

#2

hello @Somasree

see palindrome has following property
a) there is atmax one character that can occur odd number of times
b) rest other character must occur even number of times.

so here we can use bitwise to store this info.
if any character is occuring odd number of times then set its bit
otherwise keep it 0 (to indicate even number of times).

#3

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