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题目： You are a professional robber planning to rob houses along a street. Each house has a certain amount of money stashed, the only constraint stoppin 阅读全文
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题目： Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as the Hamming weight). For example, the 32- 阅读全文
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题目： Reverse bits of a given 32 bits unsigned integer. For example, given input 43261596 (represented in binary as 00000010100101000001111010011100), r 阅读全文
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题目： Rotate an array of n elements to the right by k steps. For example, with n = 7 and k = 3, the array [1,2,3,4,5,6,7] is rotated to [5,6,7,1,2,3,4]. 阅读全文
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题目：链接：题解：测试：Reference: 阅读全文
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题目： All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T, for example: "ACGAATTCCG". When studying DNA, it is sometimes useful 阅读全文
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题目： Given an input string, reverse the string word by word. A word is defined as a sequence of non-space characters. The input string does not contain 阅读全文
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题目： Given a list of non negative integers, arrange them such that they form the largest number. For example, given [3, 30, 34, 5, 9], the largest form 阅读全文
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题目：The demons had captured the princess (P) and imprisoned her in the bottom-right corner of a dungeon. The dungeon consists of M x N rooms laid out i... 阅读全文
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题目： Implement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST. Calling next() will return t 阅读全文