摘要：
Design a HashMap without using any built-in hash table libraries. To be specific, your design should include these functions: put(key, value) : Insert 阅读全文
posted @ 2020-04-15 21:32
xuan_abc
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Given a binary tree, return the values of its boundary in anti-clockwise direction starting from root. Boundary includes left boundary, leaves, and ri 阅读全文
posted @ 2020-04-15 20:30
xuan_abc
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There are 8 prison cells in a row, and each cell is either occupied or vacant. Each day, whether the cell is occupied or vacant changes according to t 阅读全文
posted @ 2020-04-15 04:33
xuan_abc
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