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An integer interval[a, b](for integersa < b) is a set of all consecutive integers fromatob, includingaandb.Find the minimum size of a set S such that for every integer interval A ininte...

Suppose LeetCode will start its IPO soon. In order to sell a good price of its shares to Venture Capital, LeetCode would like to work on some projects to increase its capital before the IPO. Since it ...

In an arrayAcontaining only 0s and 1s, aK-bit flipconsists of choosing a (contiguous) subarray of lengthKand simultaneously changing every 0 in the subarray to 1, and every 1 in the subarray to ...

You want to form atargetstring oflowercase letters.At the beginning, your sequence istarget.length'?'marks. You also have astampof lowercase letters.On each turn, you may place the stamp ...