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RSS订阅原创 LeetCode题目5
Given a List of words, return the words that can be typed using letters of alphabet on only one row's of American keyboard like the image below.Example 1:Input: ["Hello", "Alaska", "Dad",
2017-07-14 00:09:25
235
原创 LeetCode题目4
Given a non-empty binary tree, return the average value of the nodes on each level in the form of an arrayExample 1:Input: 3 / \ 9 20 / \ 15 7Output: [3, 14.5, 11]Expla
2017-07-14 00:02:05
223
原创 NP问题证明
一 所谓风筝图是这样的，其顶点数为偶数（比如2n），且其中的n个顶点构成了一个团，剩余的n个顶点则由一条称为“尾巴”的路径连接，尾巴的某个端点与团中一个顶点相连。给定一个图和目标g，风筝图问题要求该图的一个包含2g个顶点的风筝子图。请证明该问题是NP-完全的。 分析：可以将团问题归约到KITE问题。 解答;给定一个图G，和目标g，求一个
2017-07-13 23:11:59
658
原创 LeetCode题目3
题目：The Hamming distance between two integers is the number of positions at which the corresponding bits are different.Given two integers x and y, calculate the Hamming distance.Note:
2017-03-24 15:59:30
270
原创 LeetCode题目2
题目：Determine whether an integer is a palindrome. Do this without extra space.Some hints:Could negative integers be palindromes? (ie, -1)If you are thinking of converting the intege
2017-03-14 00:36:39
241
原创 LeetCode题目1
原题：Given an array of integers, return indices of the two numbers such that they add up to a specific target.You may assume that each input would have exactly one solution, and you may not use
2017-02-27 12:53:03
184
MIPS多周期CPU设计
2016-12-15
空空如也
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