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#190. Reverse Bits Reverse bits of a given 32 bits unsigned integer. For example, given input 43261596 (represented in binary as 000000101001010000011 阅读全文
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#292. Nim Game You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to rem 阅读全文
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#463. Island Perimeter You are given a map in form of a two-dimensional integer grid where 1 represents land and 0 represents water. Grid cells are co 阅读全文