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:
2014-06-15 15:17:43
阅读次数:
192
Given a linked list, return the node where the cycle begins. If there is no cycle, return null.
Follow up:
Can you solve it without using extra space?
思路:由【Leetcode】Linked
List Cycle可知,利用一快一慢...
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其他好文 时间:
2014-06-15 14:23:38
阅读次数:
288
题目
Given two integers n and k, return all possible combinations of k numbers out of 1 ... n.
For example,
If n = 4 and k = 2, a solution is:
[
[2,4],
[3,4],
[2,3],
[1,2],
[1,3],...
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其他好文 时间:
2014-06-15 14:10:54
阅读次数:
239
Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level).
For example:
Given binary tree {3,9,20,#,#,15,7},
3
/ 9 20
...
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其他好文 时间:
2014-06-15 13:26:54
阅读次数:
200
Given a sorted array, remove the duplicates in place such that each element appear only onceand return the new length.Do not allocate extra space for ...
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其他好文 时间:
2014-06-14 16:59:58
阅读次数:
221
1 迭代,重要关系 p->right = s.top(); 1 class flat{ 2 public: 3 void flatten(TreeNode* root) { 4 if (root == NULL) return; 5 ...
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其他好文 时间:
2014-06-14 16:50:41
阅读次数:
172
Given a linked list, return the node where the cycle begins. If there is no cycle, return null.Follow up: Can you solve it without using extra space?比...
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其他好文 时间:
2014-06-14 15:48:59
阅读次数:
217
1、
??
Binary Tree Inorder Traversal
Given a binary tree, return the inorder traversal of its nodes' values.
For example:
Given binary tree {1,#,2,3},
1
2
/
3
return ...
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其他好文 时间:
2014-06-14 14:11:27
阅读次数:
315
Problem
在检查一个值是否为undefined的时候,你们是如果去测试的?
要是之前的我会这样子测试
function isUndefined(obj){
return obj === undefined;
}
但是最近在看《javascript框架设计》这本书的时候,他用了另外一种方法,我就有点纳闷了。
function isUndefined(obj){...
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其他好文 时间:
2014-06-14 12:50:24
阅读次数:
264
贴出源码:
android.widget.ListView
...
if(mItemCount == 0){
resetList();
invokeOnItemScrollListener();
return;
}else if(mItemCount != mAdapter.getCount()){
throw new IllegalStateException("The conte...
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其他好文 时间:
2014-06-14 12:34:02
阅读次数:
245