-
* 高斯列主元素消去法求解矩陣方程AX=B,其中A是N*N的矩陣,B是N*M矩陣
* 輸入: n----方陣A的行數(shù)
* a----矩陣A
* m----矩陣B的列數(shù)
* b----矩陣B
* 輸出: det----矩陣A的行列式值
* a----A消元后的上三角矩陣
* b----矩陣方程的解X
標(biāo)簽：
矩陣
AX
高斯
元素
上傳時(shí)間：
2015-07-26
上傳用戶：xauthu
-
Generics and the greatly
expanded collection libraries have tremendously increased the power of
Java 5 and Java 6. But they have also confused many developers who
haven t known how to take advantage of these new features.
標(biāo)簽：
tremendously
collection
the
libraries
上傳時(shí)間：
2015-09-01
上傳用戶：playboys0
-
Generics and the greatly
expanded collection libraries have tremendously increased the power of
Java 5 and Java 6. But they have also confused many developers who
haven t known how to take advantage of these new features.
標(biāo)簽：
tremendously
collection
the
libraries
上傳時(shí)間：
2015-09-01
上傳用戶：李彥東
-
We have a group of N items (represented by integers from 1 to N), and we know that there is some total order defined for these items. You may assume that no two elements will be equal (for all a, b: a<b or b<a). However, it is expensive to compare two items. Your task is to make a number of comparisons, and then output the sorted order. The cost of determining if a < b is given by the bth integer of element a of costs (space delimited), which is the same as the ath integer of element b. Naturally, you will be judged on the total cost of the comparisons you make before outputting the sorted order. If your order is incorrect, you will receive a 0. Otherwise, your score will be opt/cost, where opt is the best cost anyone has achieved and cost is the total cost of the comparisons you make (so your score for a test case will be between 0 and 1). Your score for the problem will simply be the sum of your scores for the individual test cases.
標(biāo)簽：
represented
integers
group
items
上傳時(shí)間：
2016-01-17
上傳用戶：jeffery
-
(1) 、用下述兩條具體規(guī)則和規(guī)則形式實(shí)現(xiàn).設(shè)大寫字母表示魔王語言的詞匯 小寫字母表示人的語言詞匯 希臘字母表示可以用大寫字母或小寫字母代換的變量.魔王語言可含人的詞匯.
(2) 、B→tAdA A→sae
(3) 、將魔王語言B(ehnxgz)B解釋成人的語言.每個(gè)字母對(duì)應(yīng)下列的語言.
標(biāo)簽：
字母
tAdA
語言
詞匯
上傳時(shí)間：
2013-12-30
上傳用戶：ayfeixiao
-
1.有三根桿子A,B,C。A桿上有若干碟子
2.每次移動(dòng)一塊碟子,小的只能疊在大的上面
3.把所有碟子從A桿全部移到C桿上
經(jīng)過研究發(fā)現(xiàn)，漢諾塔的破解很簡單，就是按照移動(dòng)規(guī)則向一個(gè)方向移動(dòng)金片：
如3階漢諾塔的移動(dòng)：A→C,A→B,C→B,A→C,B→A,B→C,A→C
此外，漢諾塔問題也是程序設(shè)計(jì)中的經(jīng)典遞歸問題
標(biāo)簽：
移動(dòng)
發(fā)現(xiàn)
上傳時(shí)間：
2016-07-25
上傳用戶：gxrui1991
-
1. 下列說法正確的是 （ ）
A. Java語言不區(qū)分大小寫
B. Java程序以類為基本單位
C. JVM為Java虛擬機(jī)JVM的英文縮寫
D. 運(yùn)行Java程序需要先安裝JDK
2. 下列說法中錯(cuò)誤的是 ( )
A. Java語言是編譯執(zhí)行的
B. Java中使用了多進(jìn)程技術(shù)
C. Java的單行注視以//開頭
D. Java語言具有很高的安全性
3. 下面不屬于Java語言特點(diǎn)的一項(xiàng)是( )
A. 安全性
B. 分布式
C. 移植性
D. 編譯執(zhí)行
4. 下列語句中，正確的項(xiàng)是 ( )
A . int $e,a,b=10
B. char c,d=’a’
C. float e=0.0d
D. double c=0.0f
標(biāo)簽：
Java
A.
B.
C.
上傳時(shí)間：
2017-01-04
上傳用戶：netwolf
-
Fully revised to cover the latest standards and technologies, XML and Java(TM), Second Edition provides the practical solutions developers need to design powerful and portable Web-based applications. Featuring step-by-step examples, this book focuses on harnessing the power of Java(TM) and XML together to streamline the development process.
XML and Java(TM), Second Edition provides new coverage of emerging areas such as document management, databases, messaging, servlets, JDBC, data binding, security, and more. It begins with an overview of XML programming techniques, standard APIs, and tools. Building upon this foundation, the book goes on to cover the latest technologies, including DOM Level 2, SAX2, XSLT, SOAP, WSDL, and UDDI. It explores the role of these major middleware technologies in XML and Java-based Web application development, as well as the limitations and potential pitfalls.
標(biāo)簽：
technologies
and
standards
Edition
上傳時(shí)間：
2014-01-05
上傳用戶：hj_18
-
特點(diǎn)： 精確度0.1%滿刻度 可作各式數(shù)學(xué)演算式功能如:A+B/A-B/AxB/A/B/A&B(Hi or Lo)/|A|/ 16 BIT類比輸出功能 輸入與輸出絕緣耐壓2仟伏特/1分鐘(input/output/power) 寬范圍交直流兩用電源設(shè)計(jì) 尺寸小,穩(wěn)定性高
標(biāo)簽：
微電腦
數(shù)學(xué)演算
隔離傳送器
上傳時(shí)間：
2014-12-23
上傳用戶：ydd3625
-
TLC2543是TI公司的12位串行模數(shù)轉(zhuǎn)換器，使用開關(guān)電容逐次逼近技術(shù)完成A/D轉(zhuǎn)換過程。由于是串行輸入結(jié)構(gòu)，能夠節(jié)省51系列單片機(jī)I/O資源；且價(jià)格適中，分辨率較高，因此在儀器儀表中有較為廣泛的應(yīng)用。
TLC2543的特點(diǎn)
（1）12位分辯率A/D轉(zhuǎn)換器；
（2）在工作溫度范圍內(nèi)10μs轉(zhuǎn)換時(shí)間；
（3）11個(gè)模擬輸入通道；
（4）3路內(nèi)置自測(cè)試方式；
（5）采樣率為66kbps；
（6）線性誤差±1LSBmax；
（7）有轉(zhuǎn)換結(jié)束輸出EOC；
（8）具有單、雙極性輸出；
（9）可編程的MSB或LSB前導(dǎo)；
（10）可編程輸出數(shù)據(jù)長度。
TLC2543的引腳排列及說明
TLC2543有兩種封裝形式：DB、DW或N封裝以及FN封裝，這兩種封裝的引腳排列如圖1，引腳說明見表1
TLC2543電路圖和程序欣賞
#include<reg52.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
sbit clock=P1^0; sbit d_in=P1^1;
sbit d_out=P1^2;
sbit _cs=P1^3;
uchar a1,b1,c1,d1;
float sum,sum1;
double sum_final1;
double sum_final;
uchar duan[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
uchar wei[]={0xf7,0xfb,0xfd,0xfe};
void delay(unsigned char b) //50us
{
unsigned char a;
for(;b>0;b--)
for(a=22;a>0;a--);
}
void display(uchar a,uchar b,uchar c,uchar d)
{
P0=duan[a]|0x80;
P2=wei[0];
delay(5);
P2=0xff;
P0=duan[b];
P2=wei[1];
delay(5);
P2=0xff;
P0=duan[c];
P2=wei[2];
delay(5);
P2=0xff;
P0=duan[d];
P2=wei[3];
delay(5);
P2=0xff;
}
uint read(uchar port)
{
uchar i,al=0,ah=0;
unsigned long ad;
clock=0;
_cs=0;
port<<=4;
for(i=0;i<4;i++)
{
d_in=port&0x80;
clock=1;
clock=0;
port<<=1;
}
d_in=0;
for(i=0;i<8;i++)
{
clock=1;
clock=0;
}
_cs=1;
delay(5);
_cs=0;
for(i=0;i<4;i++)
{
clock=1;
ah<<=1;
if(d_out)ah|=0x01;
clock=0;
}
for(i=0;i<8;i++)
{
clock=1;
al<<=1;
if(d_out) al|=0x01;
clock=0;
}
_cs=1;
ad=(uint)ah;
ad<<=8;
ad|=al;
return(ad);
}
void main()
{
uchar j;
sum=0;sum1=0;
sum_final=0;
sum_final1=0;
while(1)
{
for(j=0;j<128;j++)
{
sum1+=read(1);
display(a1,b1,c1,d1);
}
sum=sum1/128;
sum1=0;
sum_final1=(sum/4095)*5;
sum_final=sum_final1*1000;
a1=(int)sum_final/1000;
b1=(int)sum_final%1000/100;
c1=(int)sum_final%1000%100/10;
d1=(int)sum_final%10;
display(a1,b1,c1,d1);
}
}
標(biāo)簽：
2543
TLC
上傳時(shí)間：
2013-11-19
上傳用戶：shen1230
