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Two Sum
题目 Given an array of integers, find two numbers such that they add up to a specific target number. The function twoSum should return indices of the two numbers such that they add up to the...
分类:其他好文   时间:2014-06-18 12:05:44    阅读次数:244
Letter Combinations of a Phone Number
题目 Given a digit string, return all possible letter combinations that the number could represent. A mapping of digit to letters (just like on the telephone buttons) is given below. In...
分类:其他好文   时间:2014-06-18 12:03:16    阅读次数:227
[算法]有趣算法合辑[21-30]
题目21:有一分数序列:2/1,3/2,5/3,8/5,13/8,21/13...求出这个数列的前20项之和。 1.程序分析:请抓住分子与分母的变化规律。 2.程序源代码: main() { int n,t,number=20; float a=2,b=1,s=0; for(n=1;n<=number;n++)  {  s=s+a/b;  t=a;a=a+b;b=t;/*这部分是程序的关键...
分类:其他好文   时间:2014-06-18 11:44:33    阅读次数:176
Teradata 的rank() 和 row_number() 函数
Teradata数据库中也有和oracle类似的分析函数,功能基本一样。示例如下:RANK() 函数SELECT * FROM salestbl ORDER BY 1,2;storeid prodid sales----------- ------- ---------1001 ...
分类:其他好文   时间:2014-06-18 10:29:26    阅读次数:272
[LeetCode ] Two Sum
Given an array of integers, find two numbers such that they add up to a specific target number.The function twoSum should return indices of the two nu...
分类:其他好文   时间:2014-06-18 10:17:40    阅读次数:174
hdu2665-Kth number
Kth number Time Limit: 15000/5000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 4585    Accepted Submission(s): 1461 Problem Description Give you a sequenc...
分类:其他好文   时间:2014-06-17 23:04:29    阅读次数:246
3Sum Closest
题目 Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of the three integers. You may assume that each input would ...
分类:其他好文   时间:2014-06-17 22:39:41    阅读次数:274
PKU-2104-K-th Number
K-th Number Time Limit: 20000MS   Memory Limit: 65536K Total Submissions: 36045   Accepted: 11522 Case Time Limit: 2000MS Description You are working for Macrohard com...
分类:其他好文   时间:2014-06-17 22:17:07    阅读次数:410
Reverse Nodes in k-Group
题目 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 rem...
分类:其他好文   时间:2014-06-17 22:15:52    阅读次数:299
Palindrome Number
题目 Determine whether an integer is a palindrome. Do this without extra space. Some hints: Could negative integers be palindromes? (ie, -1) If you are thinking of converting the integer to ...
分类:其他好文   时间:2014-06-17 16:12:39    阅读次数:226
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