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Contains Duplicate I Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at l 阅读全文
posted @ 2016-10-10 06:04
北叶青藤
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Construct minimum number by reordering a given non-negative integer array. Arrange them such that they form the minimum number. Notice The result may 阅读全文
posted @ 2016-09-15 02:01
北叶青藤
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There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of words from the 阅读全文
posted @ 2016-09-01 23:07
北叶青藤
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Given a binary tree, find the largest subtree which is a Binary Search Tree (BST), where largest means subtree with largest number of nodes in it. Not 阅读全文
posted @ 2016-08-09 10:18
北叶青藤
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For a undirected graph with tree characteristics, we can choose any node as the root. The result graph is then a rooted tree. Among all possible roote 阅读全文
posted @ 2016-08-09 09:17
北叶青藤
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Say you have an array for which the ith element is the price of a given stock on day i. Design an algorithm to find the maximum profit. You may comple 阅读全文
posted @ 2016-08-09 03:59
北叶青藤
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Union-Find Algrithm is used to check whether two components are connected or not. Examples: By using the graph, we can easily find whether two compone 阅读全文
posted @ 2016-08-09 02:25
北叶青藤
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According to the Wikipedia's article: "The Game of Life, also known simply as Life, is a cellular automaton devised by the British mathematician John 阅读全文
posted @ 2016-08-08 22:13
北叶青藤
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Given two integers representing the numerator and denominator of a fraction, return the fraction in string format. If the fractional part is repeating 阅读全文
posted @ 2016-08-08 11:39
北叶青藤
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The API: int read4(char *buf) reads 4 characters at a time from a file. The return value is the actual number of characters read. For example, it retu 阅读全文
posted @ 2016-08-08 10:11
北叶青藤
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