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Initially, there is a Robot at position (0, 0). Given a sequence of its moves, judge if this robot makes a circle, which means it moves back to the or 阅读全文
posted @ 2018-02-27 20:29
bonelee
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The Hamming distance between two integers is the number of positions at which the corresponding bits are different. Given two integers x and y, calcul 阅读全文
posted @ 2018-02-27 20:05
bonelee
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You're given strings J representing the types of stones that are jewels, and S representing the stones you have. Each character in Sis a type of stone 阅读全文
posted @ 2018-02-27 19:23
bonelee
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