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Remove Duplicates from Sorted Array II leetcode java
题目:Follow up for "Remove Duplicates":What if duplicates are allowed at most twice?For example,Given sorted array A = [1,1,1,2,2,3],Your function shou....
分类:编程语言   时间:2014-08-04 13:24:27    阅读次数:256
Single Number II
问题:找出只出现一次的数,其他数出现了三次分析:将数转化为二进制的位,数出现了三次相当于其对应的二进制上每个位置出现了3次,这里有个抽象的地方就是,例如数中包含1,3两个其二进制的第一位都包含1, 怎么区分,其实并不需要区分,无论是数字3的还是数字1的二进制第一位的1都无所谓,因为我们完全可以...
分类:其他好文   时间:2014-08-04 10:53:27    阅读次数:296
Populating Next Right Pointers in Each Node II leetcode java
题目:Follow up for problem "Populating Next Right Pointers in Each Node".What if the given tree could be any binary tree? Would your previous solution ....
分类:编程语言   时间:2014-08-04 10:31:57    阅读次数:239
[LeetCode] Pascal's Triangle II
Given an index k, return the kth row of the Pascal's triangle.For example, given k = 3, Return [1,3,3,1].Note: Could you optimize your algorithm to us...
分类:其他好文   时间:2014-08-03 23:10:36    阅读次数:179
LeetCode--Combination Sum II
思路:类似于上一题,但是加了一个index数组记录结果里面已经存放的元素索引,用来判断当前的元素是否和上一个相同并且上一个是否使用过。主要为了解决重复解的问题。 1 class Solution { 2 public: 3 vector >ans; 4 vector > combin...
分类:其他好文   时间:2014-08-03 23:01:56    阅读次数:213
[LeetCode] Triangle('Bottom-up' DP)
Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjacent numbers on the row below.For example, given the fol...
分类:其他好文   时间:2014-08-03 22:59:56    阅读次数:259
Pascal's Triangle
问题:输出杨辉三角分析:对于每一行收尾都等于1,其他位置f[i,j]=f[i-1,j-1]+f[i-1,j]class Solution {public: vector > generate(int numRows) { int i,j; if(numRows==0...
分类:其他好文   时间:2014-08-03 22:55:26    阅读次数:186
HDU4324 Triangle LOVE 【拓扑排序】
Triangle LOVE Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 2455    Accepted Submission(s): 997 Problem Description Recently, sci...
分类:其他好文   时间:2014-08-03 12:50:05    阅读次数:238
LeetCode "Remove Duplicates from Sorted List II"
Corner cases!class Solution {public: ListNode *deleteDuplicates(ListNode *head) { if (!head) return head; if (!head->next) return hea...
分类:其他好文   时间:2014-08-03 07:51:34    阅读次数:237
Pascal's Triangle II Leetcode java
题目:Given an index k, return the kth row of the Pascal's triangle.For example, given k = 3,Return [1,3,3,1].Note:Could you optimize your algorithm to ....
分类:编程语言   时间:2014-08-03 05:24:06    阅读次数:304
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