随笔分类 -  Level 2

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Palindrome Linked List
摘要：Implement a function to check if a linked list is a palindrome. Implement a function to check if a linked list is a palindrome. Implement a function t 阅读全文
posted @ 2016-07-02 13:08 北叶青藤 阅读(200) 评论(0) 推荐(0)
Swap Two Nodes in Linked List
摘要：Given a linked list and two values v1 and v2. Swap the two nodes in the linked list with values v1 and v2. It's guaranteed there is no duplicate value 阅读全文
posted @ 2016-07-02 11:06 北叶青藤 阅读(226) 评论(0) 推荐(0)
152. Maximum Product Subarray
摘要：Find the contiguous subarray within an array (containing at least one number) which has the largest product. Example For example, given the array [2,3 阅读全文
posted @ 2016-07-01 05:44 北叶青藤 阅读(201) 评论(0) 推荐(0)
Minimum Size Subarray Sum
摘要：Given an array of n positive integers and a positive integer s, find the minimal length of a subarray of which the sum ≥ s. If there isn't one, return 阅读全文
posted @ 2016-07-01 05:23 北叶青藤 阅读(150) 评论(0) 推荐(0)
Interleaving Positive and Negative Numbers
摘要：Given an array with positive and negative integers. Re-range it to interleaving with positive and negative integers. Note: You are not necessary to ke 阅读全文
posted @ 2016-06-30 05:12 北叶青藤 阅读(301) 评论(0) 推荐(0)
Majority Number I & || && |||
摘要：Majority Number Given an array of integers, the majority number is the number that occurs more than half of the size of the array. Find it. Example Gi 阅读全文
posted @ 2016-06-29 22:58 北叶青藤 阅读(395) 评论(0) 推荐(0)
3. Longest Substring Without Repeating Characters
摘要：Question: Find the longest sub-string without repeating characters. For example, if the given string is "abcdcefg", the longest sub-string is "dcefg". 阅读全文
posted @ 2015-01-26 05:50 北叶青藤 阅读(202) 评论(0) 推荐(0)
125. Valid Palindrome
摘要：Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example,"A man, a plan, a canal: Pan 阅读全文
posted @ 2015-01-10 08:35 北叶青藤 阅读(158) 评论(0) 推荐(0)
38. Count and Say
摘要：The count-and-say sequence is the sequence of integers beginning as follows:1, 11, 21, 1211, 111221, ... 1 is read off as "one 1" or 11.11 is read off 阅读全文
posted @ 2015-01-10 08:31 北叶青藤 阅读(131) 评论(0) 推荐(0)
实现格雷码(Gray Code)
摘要：问题：产生n位元的所有格雷码。 格雷码(Gray Code)是一个数列集合，每个数使用二进位来表示，假设使用n位元来表示每个数字，任两个数之间只有一个位元值不同。 例如以下为3位元的格雷码： 000 001 011 010 110 111 101 100 。 如果要产生n位元的格雷码，那么格雷码的个 阅读全文
posted @ 2015-01-06 09:01 北叶青藤 阅读(307) 评论(0) 推荐(0)
Combinations
摘要：Given two integers n and k, return all possible combinations of k numbers out of 1 ... n. For example,If n = 4 and k = 2, a solution is: 转载请注明出处: cnbl 阅读全文
posted @ 2015-01-06 08:53 北叶青藤 阅读(188) 评论(0) 推荐(0)
含重复字符的字符串排列
摘要：问题：给一个字符串，比如ABC， 把所有的排列，即：ABC, ACB, BAC, BCA, CAB, CBC 都找出来。 解题思路：对于一个n 位的字符串来讲，它是n-1位字符串的排列 加上 没有在 n -1 位字符串里 那个字符 的排列。 有点难理解，用例子说明：对于字符串ABC来讲，它所有的排列 阅读全文
posted @ 2015-01-01 08:33 北叶青藤 阅读(368) 评论(0) 推荐(0)

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