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[LeetCode] Count Primes
Description:Count the number of prime numbers less than a non-negative number,n.思路:一个一个判断,时间复杂度:O(n^2)代码:TLEpublic class Solution { public int coun...
分类:其他好文   时间:2015-07-13 17:45:04    阅读次数:97
加权重随机算法
场景:有N个合作方,每个合作方都有一定的权重,按权重随机选择一个合作方 typedef struct { string k;//partner_id string v;//value string m;//0:number 1:ratio }Bookpartner_count_listInfo; string GetRandNumRatio( vector arp...
分类:编程语言   时间:2015-07-13 16:22:21    阅读次数:162
TreeView节点
TreeView由节点构成,建树通过对TreeView.items属性进行操作。Items是一个TTreeNodes对象,这是一个TTreeNode集。 一、针对TTreeNodes,也就是 TreeView.Items,有这些属性: 1、count,节点个数。(节点总数) 2、item[index...
分类:其他好文   时间:2015-07-13 15:45:49    阅读次数:85
poj3250 Bad Hair Day
Description Some of Farmer John's N cows (1 ≤ N ≤ 80,000) are having a bad hair day! Since each cow is self-conscious about her messy hairstyle, FJ wants to count the number of other cows that can ...
分类:其他好文   时间:2015-07-13 14:01:45    阅读次数:135
【LeetCode】233. Number of Digit One
Number of Digit OneGiven an integer n, count the total number of digit 1 appearing in all non-negative integers less than or equal to n.For example:Gi...
分类:其他好文   时间:2015-07-13 13:41:28    阅读次数:103
[LeetCode][Java] Count and Say
题目: The count-and-say sequence is the sequence of integers beginning as follows: 1, 11, 21, 1211, 111221, ... 1 is read off as "one 1" or 11. 11 is read off as "two 1s" or 21. 21 is rea...
分类:编程语言   时间:2015-07-13 12:16:38    阅读次数:120
用Java实现一些常见的问题
八皇后 1 public class EightQueen { 2 3 private static final int ROW = 4; 4 private static final int COL = 4; 5 6 private static int count =...
分类:编程语言   时间:2015-07-13 11:54:31    阅读次数:148
POJ-1118(超时,但未找到原因)
#include #include #include using namespace std; //y=kx+z typedef struct{ double k; double z; int count; }Skzc; int main(int argc, char *argv[]){ //(x,y) multimap place; vector kzcVector; map...
分类:其他好文   时间:2015-07-13 06:38:24    阅读次数:108
Oracle ->> 查看分区表的每个分区的数据行分布情况
ora_hash函数用来返回分区号,而dbms_rowid.rowid_object()函数用来返回object_idselect dbms_rowid.rowid_object(rowid) obj_id, ora_hash ( id, 31, 0) part_id ,count(*) froms...
分类:数据库   时间:2015-07-13 00:38:24    阅读次数:1370
Apache Spark 1.4 读取 hadoop 2.6 文件系统上文件
scala> val file = sc.textFile("hdfs://9.125.73.217:9000/user/hadoop/logs") scala> val count = file.flatMap(line => line.split(" ")).map(word => (word,...
分类:Web程序   时间:2015-07-12 23:08:03    阅读次数:274
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