Given n, how many structurally unique BST's (binary search trees) that store values 1...n?For example, Given n = 3, there are a total of 5 unique BST'...
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其他好文 时间:
2014-06-28 11:57:50
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232
Same Tree
Given two binary trees, write a function to check if they are equal or not.
Two binary trees are considered equal if they are structurally identical and
the n...
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其他好文 时间:
2014-06-19 12:49:17
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301
Given two binary trees, write a function to check if they are equal or not.Two binary trees are considered equal if they are structurally identical an...
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其他好文 时间:
2014-06-18 12:32:58
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169
题目:Unique Binary Search TreesGivenn, how many structurally uniqueBST's(binary search trees) that store values 1...n?For example,Givenn= 3, there are a...
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其他好文 时间:
2014-06-15 13:16:53
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202
1、
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Unique Binary Search Trees II
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 uni...
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其他好文 时间:
2014-06-15 09:09:00
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256
题目:Same TreeGiven two binary trees, write a function to check if they are equal or not.Two binary trees are considered equal if they are structurally ...
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其他好文 时间:
2014-06-15 00:53:09
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314
以i为根节点时,其左子树构成为[0,...,i-1],其右子树构成为[i+1,...,n]构成。根结点确定时,左子树与右子树的结点个数都是确定的。这样就可以把这个问题化成子问题。因此可以用动态规划解。Sigma(左边的子树可能状态
* 右边子树可能状态) = 当前个数的结点可能的状态数。public...
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其他好文 时间:
2014-06-10 12:46:05
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175
http://poj.org/problem?id=1095先求出n个节点数的二叉树的形态有多少种。卡特兰数f[n]=f[n-1]*(4*n-2)/(n+1);再递归求。
1 #include 2 #include 3 #include 4 #define ll long long 5 #de...
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其他好文 时间:
2014-06-09 15:14:11
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167
题目
Given n, how many structurally unique BST's (binary search trees) that store values 1...n?
For example,
Given n = 3, there are a total of 5 unique BST's.
1 3 3 2 ...
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其他好文 时间:
2014-06-08 17:06:58
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235
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.
...
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其他好文 时间:
2014-06-08 15:15:26
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223