xennygrimmato's blog

Cumulative xor
By xennygrimmato, 11 years ago, In English

For a given sequence of binary numbers {a1, a2, a3, ... , an}, {c1, c2, ... , cn} indicates the sequence of cumulative xor upto the i'th number. How can I find the cumulative xor of a subarray ai...aj using the sequence of cumulative xors?

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11 years ago, # |
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So

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    11 years ago, # ^ |
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    Awesome! I wanted this to solve a problem in NEERC 2013-14. Thanks!

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