Stack depth: O(1). The operator is called from C++, returns a list, and the C++ loop calls it again. Nix call frames don't accumulate.
Alarmed that Great Britain has only enough gas in storage to cover two days of consumption? Actually, Michael Shanks, the energy minister, is right that the bald statistic is not a reason to run for the hills. But he would help his case if he admitted that the long era of running a “just-in-time” approach to gas supplies looks increasingly unworkable.
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Reaching the end point: when test_and_split finds that a transition for the next character already exists, the algorithm has reached what the paper calls the end point of the current phase. All remaining suffixes are already represented implicitly, so the phase stops. This is the key to the algorithm’s O(n)O(n)O(n) time: the end point can only move forward through the string across phases, bounding the total work.。业内人士推荐PDF资料作为进阶阅读
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