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[leetcode] Unique Paths II
Follow up for "Unique Paths":Now consider if some obstacles are added to the grids. How many unique paths would there be?
分类:其他好文   时间:2014-07-10 11:10:26    阅读次数:302
Problem Path Sum II
Problem Description:Given a binary tree and a sum, find all root-to-leaf paths where each path's sum equals the given sum.Solution: 递归。 1 public List>...
分类:其他好文   时间:2014-07-07 16:59:12    阅读次数:169
现代C++学习笔记之一入门篇:智能指针(C++ 11)
原始指针:通过new建立的*指针智能指针:通过智能指针关键字(unique_ptr, shared_ptr ,weak_ptr)建立的指针在现代 C++ 编程中,标准库包含智能指针,该指针用于确保程序不存在内存和资源泄漏且是异常安全的。在现代 C++ 中,原始指针仅用于范围有限的小代码块、循环或者性...
分类:编程语言   时间:2014-06-30 13:49:42    阅读次数:354
Codeforces 14D Two Paths 树的直径
题目链接:点击打开链接 题意:给定一棵树 找2条点不重复的路径,使得两路径的长度乘积最大 思路: 1、为了保证点不重复,在图中删去一条边,枚举这条删边 2、这样得到了2个树,在各自的树中找最长链,即树的直径,然后相乘即可 #include #include #include #include #include #include #include #include #include #i...
分类:其他好文   时间:2014-06-30 07:30:01    阅读次数:235
leetcode--Longest Palindromic Substring
Given a stringS, find the longest palindromic substring inS. You may assume that the maximum length ofSis 1000, and there exists one unique longest pa...
分类:其他好文   时间:2014-06-29 20:28:58    阅读次数:183
LeetCode——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 example: Given the below binary tree and sum = 22, 5 / ...
分类:其他好文   时间:2014-06-28 07:31:28    阅读次数:214
Permutations II
题目 Given a collection of numbers that might contain duplicates, return all possible unique permutations. For example, [1,1,2] have the following unique permutations: [1,1,2], [1,2,1], ...
分类:其他好文   时间:2014-06-27 23:53:21    阅读次数:290
[leetcode] Permutation Sequence
The set [1,2,3,…,n] contains a total of n! unique permutations.
分类:其他好文   时间:2014-06-27 11:49:18    阅读次数:152
[leetcode] Permutations II
Given a collection of numbers that might contain duplicates, return all possible unique permutations.
分类:其他好文   时间:2014-06-27 11:47:58    阅读次数:166
Sudoku Solver
题目 Write a program to solve a Sudoku puzzle by filling the empty cells. Empty cells are indicated by the character '.'. You may assume that there will be only one unique solution. ...
分类:其他好文   时间:2014-06-27 07:06:50    阅读次数:184
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