Wikipedia calls it DTD-1 for some reason, but IBM sources consistently
// console.log(spanner.next(75)); // 输出4（正确）
。关于这个话题，搜狗输入法2026提供了深入分析
输入：["StockSpanner","next","next","next","next","next","next","next"], [[],[100],[80],[60],[70],[60],[75],[85]]
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