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Contains DuplicateII
Time Limit Exceeded/*Contains Duplicate II Given an array of integers and an integer k, find out whether there there are two distinct indices i and j....
分类:其他好文   时间:2015-06-02 12:54:18    阅读次数:88
leetcode - Contains Duplicate III
题目: Contains Duplicate III   Given an array of integers, find out whether there are two distinct indices i and j in the array such that the difference between nums[i] and nums[j] is at mo...
分类:其他好文   时间:2015-06-02 11:21:48    阅读次数:90
Project Euler:Problem 27 Quadratic primes
Euler discovered the remarkable quadratic formula: n² + n + 41 It turns out that the formula will produce 40 primes for the consecutive values n = 0 to 39. However, when n = 40, 402 + 40 + 41 = 40...
分类:其他好文   时间:2015-06-02 11:16:49    阅读次数:139
Project Euler:Problem 22 Names scores
Using names.txt (right click and 'Save Link/Target As...'), a 46K text file containing over five-thousand first names, begin by sorting it into alphabetical order. Then working out the alphabetical ...
分类:其他好文   时间:2015-06-02 09:33:28    阅读次数:117
java静态方法的重写,为什么不能?
JAVA静态方法形式上可以重写,但从本质上来说不是JAVA的重写。因为静态方法只与类相关,不与具体实现相关,声明的是什么类,则引用相应类的静态方法(本来静态无需声明,可以直接引用),看下例子: Java代码   class Base{          static void a( ){System.out.println("A");  }                   ...
分类:编程语言   时间:2015-06-02 09:28:10    阅读次数:124
[LeetCode] Contains Duplicate III 包含重复值之三
Given an array of integers, find out whether there are two distinct indices i and j in the array such that the difference between nums[i] and nums[j] ...
分类:其他好文   时间:2015-06-02 01:37:36    阅读次数:111
Java的static
public class Test02 { public static void main(String[] args){ int x = 5; System.out.println(x); } } 这个时候int前面是不能加static的 public class Test02 { static int x = 5; public static void main...
分类:编程语言   时间:2015-06-01 22:45:34    阅读次数:129
单精度浮点数按存储格式转为整数的程序
/////////////////// #include //----------------- union int_char { unsigned char ch[4]; float i; }; void out_put(union int_char x)//x86是小端对其模式,即最数据的最低位存储在地址的最低位上。 { printf("单精度浮点数值为:%f\n"...
分类:其他好文   时间:2015-06-01 22:37:36    阅读次数:264
Java竞赛可能会用到的东西
以下部分内容并非原创,原作者见到还请谅解~大数String s=”12345”;BigInteger c=BigInteger.valueOf(s);格式输出System.out.printf("%+8.3f\n", 3.14); //"+"表示后面输出的数字会有正负号,正的+,负的- ;8.3f表...
分类:编程语言   时间:2015-06-01 22:30:52    阅读次数:187
通过DriveManager类实现数据库MySQL的连接
1、加载驱动String drivername="com.mysql.jdbc.Driver"; //数据库驱动类路径try{Class.forName(drivername); //创建驱动System.out.println("创建驱动成功!");}catch(ClassNotFoundExce...
分类:数据库   时间:2015-06-01 20:20:44    阅读次数:142
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