比起POJ弱爆了一题，从后往前扫描一遍，O(n)时间，只要注意各种极端情况即可，不明白通过率为什么只有13%。
#include
#include
using namespace std;
class Solution {
public:
void reverseWords(string &s) {
char* cstr = new char[s.size()+1];
...
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其他好文 时间：
2014-06-05 03:45:47
阅读次数：
221
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}, r...
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其他好文 时间：
2014-06-03 03:12:46
阅读次数：
222
【题目】
Given a linked list and a value x, partition it such that all nodes less than x come before nodes greater than or equal to x.
You should preserve the original relative order of the nodes in each of the two partitions.
For example,
Given 1->4->3-...
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其他好文 时间：
2014-06-03 00:02:29
阅读次数：
270
1、Maximum Depth of Binary Tree
Given a binary tree, find its maximum depth.
The maximum depth is the number of nodes along the longest path from the root node down to the farthest leaf node.
clas...
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其他好文 时间：
2014-06-02 23:13:22
阅读次数：
290
【题目】
Reverse a linked list from position m to n. Do it in-place and in one-pass.
For example:
Given 1->2->3->4->5->NULL, m = 2 and n = 4,
return 1->4->3->2->5->NULL.
Note:
Given m, n satisfy the following condition:
1 ≤ m ≤ n ≤ length of list.
【题意】
...
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其他好文 时间：
2014-06-01 15:08:34
阅读次数：
237
【题目】
Given a binary tree, return the inorder traversal of its nodes' values.
For example:
Given binary tree {1,#,2,3},
1
2
/
3
return [1,3,2].
Note: Recursive solution is trivial, could you do it iteratively?
confused what "{1,#,2...
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其他好文 时间：
2014-06-01 13:01:23
阅读次数：
279
Given a linked list, swap every two adjacent nodes and return its head.
For example,
Given 1->2->3->4, you should return the list as 2->1->4->3.
Your algorithm should use only constant space....
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其他好文 时间：
2014-06-01 10:41:23
阅读次数：
242
Given a linked list, reverse the nodes of a linked list k at a time and return its modified list.
If the number of nodes is not a multiple of k then left-out nodes in the end should remain as it is...
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其他好文 时间：
2014-06-01 09:05:42
阅读次数：
271
【题目】
Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list.
For example,
Given 1->2->3->3->4->4->5, return 1->2->5.
Given 1->1->1->2->3, return 2->3.
【题意】
给定一个有序链表，删出其中重复出现的值...
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其他好文 时间：
2014-05-31 21:14:11
阅读次数：
333
