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/** * * @author gentleKay * You are given an n x n 2D matrix representing an image. * Rotate the image by 90 degrees (clockwise). * Follow up: * Could 阅读全文
摘要：
/** * * @author gentleKay * Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: * Int 阅读全文
摘要：
/** * * @author gentleKay * The gray code is a binary numeral system where two successive values differ in only one bit. * Given a non-negative intege 阅读全文