xor-cancellation-finds-extra-char

Status: IN

`findTheDifference` uses XOR cancellation (`reduce(xor, ...)`) over the ordinals of `s + t` to isolate the single extra character — every matched character cancels to zero.

Source: entries/2026/06/06/find-the-difference-solution.md

Depended on by

• xor-universal-bit-primitive

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