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Leetcode | Longest Consecutive Sequence
Given an unsorted array of integers, find the length of the longest consecutive elements sequence.For example,Given [100, 4, 200, 1, 3, 2],The longest...
分类:其他好文   时间:2014-05-05 23:01:41    阅读次数:374
【LeetCode OJ】Sum Root to Leaf Numbers
# Definition for a binary tree node# class TreeNode:# def __init__(self, x):# self.val = x# self.left = None# self.right ...
分类:其他好文   时间:2014-05-05 22:56:23    阅读次数:419
【LeetCode OJ】Longest Consecutive Sequence
Problem Link:http://oj.leetcode.com/problems/longest-consecutive-sequence/This problem is a classical problem where we can reduce the running time by ...
分类:其他好文   时间:2014-05-05 22:55:22    阅读次数:552
Leetcode: Remove Duplicates from Sorted List
遇到的问题:input{1,1,1}, output{1,1}, expected{1}, 原因在于若temp.val==temp.next.val, 则需要temp.next=temp.next.next, 这时候就不要temp=temp.next了注意停止条件不光是temp!=null,还应该有...
分类:其他好文   时间:2014-05-05 22:47:08    阅读次数:454
Reverse Nodes in k-Group
Link:http://oj.leetcode.com/problems/reverse-nodes-in-k-group/Given a linked list, reverse the nodes of a linked listkat a time and return its modifie...
分类:其他好文   时间:2014-05-05 22:46:42    阅读次数:456
Reverse Linked List II
Link:http://oj.leetcode.com/problems/reverse-linked-list-ii/Reverse a linked list from positionmton. Do it in-place and in one-pass.For example:Given1...
分类:其他好文   时间:2014-05-05 22:46:11    阅读次数:411
Swap Nodes in Pairs
Link:http://oj.leetcode.com/problems/swap-nodes-in-pairs/Given a linked list, swap every two adjacent nodes and return its head.For example,Given1->2-...
分类:其他好文   时间:2014-05-05 22:45:37    阅读次数:331
Leetcode: Balanced Binary Tree
很锻炼DP/recursive思路的一道题,个人感觉DP/recursive算是比较难写的题目了。这道题解法的巧妙之处在于巧用-1,并且使用临时存储,节省了很多开支。这道题同时也在Career Cup上面出现过这道题我两次调试通过,第一次错是因为input{}, output false, expe...
分类:其他好文   时间:2014-05-05 22:45:10    阅读次数:352
【LeetCode OJ】Word Ladder I
Problem Link:http://oj.leetcode.com/problems/word-ladder/Two typical techniques are inspected in this problem:Hash Table. One hash set is the words di...
分类:其他好文   时间:2014-05-05 22:44:44    阅读次数:393
Leetcode: Same Tree
1 /** 2 * Definition for binary tree 3 * public class TreeNode { 4 * int val; 5 * TreeNode left; 6 * TreeNode right; 7 * TreeNo...
分类:其他好文   时间:2014-05-05 22:43:14    阅读次数:313
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