Give two versions of WA code:
Version 1: Runtime Error: Find the bug
class Solution {
public:
void find(const string& s, const unordered_set& dict, vector& res) {
int i, j, len = s.length();
...
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其他好文 时间：
2014-08-03 15:21:27
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329
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 nodes have the same value.
/**
...
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其他好文 时间：
2014-08-03 12:54:55
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201
Description
You have N integers, A1, A2, ... ,
AN. You need to deal with two kinds of operations. One type of operation is to add some given number to each number in a given interval. The other ...
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其他好文 时间：
2014-08-03 12:53:25
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311
Corner cases!class Solution {public: ListNode *deleteDuplicates(ListNode *head) { if (!head) return head; if (!head->next) return hea...
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其他好文 时间：
2014-08-03 07:51:34
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237
Description
Each of the M lanes of the Park of Polytechnic University of Bucharest connects two of the N crossroads of the park (labeled from 1 to N). There is no pair of crossroads connected by mo...
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其他好文 时间：
2014-08-02 23:27:14
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327
Big String
Time Limit: 2 Seconds Memory Limit: 65536 KB
We will construct an infinitely long string from two short strings: A = "^__^" (four characters), and B = "T.T" (three characters). R...
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其他好文 时间：
2014-08-02 21:02:04
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291
题目再现
There are two sorted arrays A and B of size m and n respectively. Find the median of the two sorted arrays. The overall run time
complexity should be O(log (m+n)).
题意解析...
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其他好文 时间：
2014-08-02 18:24:13
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335
问题：有序合并两个有序链表分析：归并排序的合并部分class Solution {public: ListNode *mergeTwoLists(ListNode *l1, ListNode *l2) { ListNode *helper=new ListNode(0); ...
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其他好文 时间：
2014-08-02 18:17:03
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170
问题：将有序链表中的重复元素删除分析：由于有序，所以p结点是否重复只需要和它的前一节点比较是否相等就可以了，我们可以定义一个helper新头结点链表 将p结点与新链表的尾结点比较，若不相等则加入新链表中。class Solution{public: ListNode *deleteDup...
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其他好文 时间：
2014-08-02 17:47:33
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210
Description
Gigel has a strange "balance" and he wants to poise it. Actually, the device is different from any other ordinary balance.
It orders two arms of negligible weight and each arm's lengt...
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其他好文 时间：
2014-08-02 15:30:13
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235
