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Many physicists consider Ed Witten to be Einstein's true successor. A mathematical physicist at the Institute for Advanced Study in Princeton, New Jersey, Witten has been awarded everything from a ...
Given a string `s`, the task is to find the longest palindromic substring in `s`. 1. We define a helper function `expandFromCenter` that takes a string `s`, and two indices `start` and `end` as input.
se un carattere 'c' della porzione di string in esame è in max_occurrences, allora il suo numero di occorrenze (nella porzione) è al massimo max_occurrences['c'].
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