Given a singly linked list L: L0→L1→…→Ln-1→Ln,
reorder it to: L0→Ln→L1→Ln-1→L2→Ln-2→…
You must do this in-place without altering the nodes' values.
For example,
Given {1,2,3,4}, reorder it to ...
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其他好文 时间:
2015-01-15 10:57:56
阅读次数:
202
共有两张表t1,t2t1的表结构t2的表结构t1和t2通过insertintot1values(‘www‘,‘aaa‘,‘bbb‘);insertintot1values(‘www1‘,‘aaa1‘,‘bbb1‘);insertintot1values(‘www2‘,‘aaa2‘,‘bbb2‘);insertintot1values(‘www3‘,‘aaa3‘,‘bbb3‘);t2同理构建insertintot1select*fromt1;insertintot2sel..
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数据库 时间:
2015-01-15 01:51:54
阅读次数:
330
题目:
Given a binary tree, return the preorder traversal of its nodes' values.
For example:
Given binary tree {1,#,2,3},
1
2
/
3
return [1,2,3].
Note: Recursive...
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编程语言 时间:
2015-01-14 22:59:13
阅读次数:
174
Givenn, how many structurally uniqueBST's(binary search trees) that store values 1...n?For example,Givenn= 3, there are a total of 5 unique BST's 1 .....
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其他好文 时间:
2015-01-14 22:37:54
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241
php源代码之函数集介绍array_change_key_case — 返回字符串键名全为小写或大写的数组array_chunk — 将一个数组分割成多个array_combine — 创建一个数组,用一个数组的值作为其键名,另一个数组的值作为其值array_count_values — 统计数组中...
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Web程序 时间:
2015-01-14 21:19:15
阅读次数:
362
第一种方式单独为每一个Action做验证 // POST api/values public HttpResponseMessage Post([FromBody]UserInfo userInfo) { if (string.Is...
Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum.
For example:
Given the below binary tree and sum
...
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其他好文 时间:
2015-01-14 16:58:45
阅读次数:
167
题目:
Given n, generate all structurally unique BST's (binary search trees) that store values 1...n.
For example,
Given n = 3, your program should return all 5 unique BST's shown below.
1 ...
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编程语言 时间:
2015-01-14 16:58:27
阅读次数:
222
Given a binary tree, return the bottom-up level order traversal of its nodes' values. (ie, from left to right, level by level from leaf to root).
For example:
Given binary tree {3,9,20,#,#,15,7},
...
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其他好文 时间:
2015-01-14 15:36:13
阅读次数:
127