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Valid Sudoku
https://oj.leetcode.com/problems/valid-sudoku/Determine if a Sudoku is valid, according to:Sudoku Puzzles - The Rules.The Sudoku board could be partia...
分类:其他好文   时间:2015-02-28 21:32:40    阅读次数:223
Java compiler level does not match the version of the installed Java project facet
?? 由于Java编译器的水平不相匹配的版本的问题,经常出现该项目显示一个红色的x*(也可能是相应的jar文件的路径改变引起的),在window->show views->problems查看该问题的具体情况,如下: java compiler level does not match the version of the installed java project facet: 决解方法...
分类:编程语言   时间:2015-02-28 18:41:32    阅读次数:143
Path Sum II
https://oj.leetcode.com/problems/path-sum-ii/Given a binary tree and a sum, find all root-to-leaf paths where each path's sum equals the given sum.For...
分类:其他好文   时间:2015-02-28 16:14:26    阅读次数:155
Validate Binary Search Tree
https://oj.leetcode.com/problems/validate-binary-search-tree/Given a binary tree, determine if it is a valid binary search tree (BST).Assume a BST is ...
分类:其他好文   时间:2015-02-27 21:24:37    阅读次数:143
Binary Tree Level Order Traversal II
https://oj.leetcode.com/problems/binary-tree-level-order-traversal-ii/Given a binary tree, return thebottom-up level ordertraversal of its nodes' valu...
分类:其他好文   时间:2015-02-27 14:53:37    阅读次数:133
Binary Tree Level Order Traversal
https://oj.leetcode.com/problems/binary-tree-level-order-traversal/Given a binary tree, return thelevel ordertraversal of its nodes' values. (ie, from...
分类:其他好文   时间:2015-02-27 14:49:54    阅读次数:178
Binary Search Tree Iterator
https://oj.leetcode.com/problems/binary-search-tree-iterator/Implement an iterator over a binary search tree (BST). Your iterator will be initialized ...
分类:其他好文   时间:2015-02-26 18:22:37    阅读次数:206
【POJ】【2151】Check the difficulty of problems
概率DP kuangbin总结中的第8题 一开始题目看错导致想转移方程想错了……想成f[i][j]表示前 i 个队伍中最多的做出来 j 道题的概率……sigh 看了下题解……其实是对于每个队伍 i 单独考虑做出来 j 道题的概率!!最后再根据情况将t个队伍合并起来……WA:又忘了POJ上dou...
分类:其他好文   时间:2015-02-26 18:06:34    阅读次数:117
[LeetCode]189 Rotate Array
https://oj.leetcode.com/problems/rotate-array/publicclassSolution{ publicvoidrotate(int[]nums,intk){ intlen=nums.length; inthead=len-(k%len); int[]copy=newint[len]; for(inti=0;i<len;i++) { copy[i]=nums[(i+head)%len]; } for(inti=0;i<len;i++) { nums[i]=..
分类:其他好文   时间:2015-02-26 00:05:22    阅读次数:110
[LeetCode]187 Repeated DNA Sequences
https://oj.leetcode.com/problems/repeated-dna-sequences/publicList<String>findRepeatedDnaSequences(Strings){ //Assumptions... List<String>toReturn=newArrayList<>(); Set<String>seen=newHashSet<>(); for(inti=0;i<=s.length(..
分类:其他好文   时间:2015-02-26 00:04:28    阅读次数:117
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