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[leetcode]N-Queens II
问题描述: Follow up for N-Queens problem. Now, instead outputting board configurations, return the total number of distinct solutions. (N-Queens problem can see here ) 基本思路: 可参照N-Queens问题,按...
分类:其他好文   时间:2014-12-21 22:12:49    阅读次数:157
【Leetcode】Linked List Cycle
一、原题 Linked List Cycle   Given a linked list, determine if it has a cycle in it. Follow up: Can you solve it without using extra space? 二、分析 选用两个指针扫描链表,一个速度快,一个速度慢,若两个指针相遇,说明有环。 三、...
分类:其他好文   时间:2014-12-18 20:44:05    阅读次数:157
LeetCode: N-Queens II 解题报告
N-Queens II (LEVEL 4 难度级别,最高级5)Follow up for N-Queens problem.Now, instead outputting board configurations, return the totalnumber of distinct solutio...
分类:其他好文   时间:2014-12-18 20:18:25    阅读次数:183
语法分析备忘
定义:FIRST(α):α的开始符号集或首符号集。FOLLOW(A):{a|...Aa...,a∈V_T}。SELECT(A->α):若α不能推出ε,则SELECT(A->α)=FIRST(α),否则SELECT(A->α)=(FIRST(α)-{ε})∪FOLLOW(A)。
分类:其他好文   时间:2014-12-16 22:12:51    阅读次数:172
【LeetCode】N-Queens II
题意: Follow up for N-Queens problem. Now, instead outputting board configurations, return the total number of distinct solutions....
分类:其他好文   时间:2014-12-15 00:14:20    阅读次数:252
【LeetCode】Permutations II
Permutations IIGiven a collection of numbers that might contain duplicates, return all possible unique permutations.For example,[1,1,2]have the follow...
分类:其他好文   时间:2014-12-13 19:16:20    阅读次数:180
LeetCode Linked List Cycle II
Given a linked list, return the node where the cycle begins. If there is no cycle, returnnull.Follow up:Can you solve it without using extra space?首先指...
分类:其他好文   时间:2014-12-12 01:13:05    阅读次数:243
LeetCode Linked List Cycle
Given a linked list, determine if it has a cycle in it.Follow up:Can you solve it without using extra space?解题思路:突发奇想,脑洞大开。回路,自然是走到已经走过的地方,如何知道这个地方已经走...
分类:其他好文   时间:2014-12-11 23:48:27    阅读次数:147
leetcode------Linked List Cycle(3)
标题:Linked List Cycle通过率:36%难度中等Given a linked list, determine if it has a cycle in it.Follow up: Can you solve it without using extra space?拿到题后我以为很简单...
分类:其他好文   时间:2014-12-11 17:09:01    阅读次数:167
(每日算法)LeetCode --- Remove Duplicates from Sorted Array II (删除重复元素II)
Remove Duplicates from Sorted Array II Leetcode 题目: Follow up for "Remove Duplicates": What if duplicates are allowed at most twice? For example, Given sorted array A = [1,1,1,2,2,3], Y...
分类:编程语言   时间:2014-12-10 21:18:41    阅读次数:209
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