5.My answer is as follows:By title: FX (0) =0,FX (1), FX (2) =0.5,FX (3) =1 l0=0,u0=1by formulalk=lk+ (UK-LK) Fx (xk-1)uk=lk+ (UK-LK) Fx (XK)and a sequence of 113231(1) K=1,input 1l1=l0+ (u0-l0) Fx (0) =0u1=l0+ (u0-l0) Fx (1) =0.2(2) K=2,input 1l2=l1+ (U1-L1) Fx (0) =0u2=l1+ (U1-L1) Fx (1) =0+ (1-0) *0.2=0.04(3) K=3,input 3l3=l2+ (U2-L2) Fx (2) =0+ (0.04-0) *0.5=0.02u3=l2+ (U2-L2) Fx (3) =0+ (0.04-0) *1=0.04(4) K=4,input 2l4=l3+ (U3-L3) Fx (1) =0.02+
inheritance by default, while inheriting from struct defaults to public inheritance.3. Union Union3.1 DefinitionsA union (also known as a common body) is a special form of variable that is defined using the keyword Union, and its declaration and variable definitions are very similar to the structure. The form is:Union Union name{Data type member name;Data type member name;...} variable name;A union represents a number of variables that share a single memory location , saving different data type
;Example 3% min z=|x1|+2|x2|+3|x3|+4|x4|;% S.T. x1-x2-x3+x4=0;% x1-x2+x3-3*x4=1;% x1-x2-2*x3+3*x4=-0.5%objective function Objfun[Email protected] (x) ABS (X (1))+2*abs (X (2))+3*abs (X (3))+4*abs (X (4)) %Equality constraint Aeq=[1-1-1 1 1-1 1–3 1-1-2 3]; BEQ=[0 1-0.5]'; x0=[0 0 0 0];%It's critical and important to give an initial value oh x=fmincon (OBJFUN,X0,[],[],AEQ,BEQ)%Below is a program based on the need to improve min Z=[1 2 3 4 1 2 3 4]*[U1 U2
;> C4 = normalize ('nfd ', c2)>>> Len (c4)5>>> C4 = c1True
Western keyboards usually type strings as short as possible, that is, the result is the same as that of "NFC", but the "NFC" operation is used to compare whether the strings are equal and safe. The W3C recommends NFC results.
The same character has two different encodings in Unicode.This function converts a single Unicode character to another Unicode character.
>>> O1 = '\ u2126'>>> O2 = '\ u03a9'>>> O1, o2('Hour', 'Ω ')>>> O1 = o2False>
Php interview question 1. use PHP to print the time format of the previous day in the format of 22:21:21 (2 points) "u % j q! S $} 0 V8 ~ 4? #?
Date ("Y-m-d H: I: s", strtotime ("-1 days "));
2. differences between echo (), print (), and print_r () (3 points)Echo is a PHP statement, print and print_r are functions, and the statement does not return values. the function can return values (even if it is not used)Print () can only print values of simple type variables (such as int and string)
Solaris was soon cloned. Now install SC3.1u3.
B. Install SC 3.1 U3
1. mount the SC3.1 U3 ISO file
2. scinstall
3. create a new Cluster
4. add two nodes (now there is only one node, and the other node is fictitious, Xiang), Interconnect network selects pcn1 to pcn1, pcn2 to pcn2
5. reboot. now the cluster is in installmode.
6. delete fictitious nodes:
A. scsetup delete interconnect
B. scconf-r-h no
1. Install keilc51 (U2 and U3) and proteus6 (94 and 95;2. Download two software packages, one is proteu's vdmagdi.exe, and the other is the authorized prospice. dll.
3rd, first run vdmagdi.exe to install the Keil interface, and then overwrite prospice. dll in the bin of the Proteus installation folder, such as: D:/program files/labcenter electronics/Proteus 6 Professional/bin;4. Open proteus and select user remote debug monitor from the debug drop-do
1. The time format of the day before printing with PHP is 2006-5-10 22:21:21 (2 minutes) "u% j q! S $}0 V8 ~?
Date ("Y-m-d h:i:s", Strtotime ("-1 Days"));
2, Echo (), print (), Print_r () difference (3 points)ECHO is a PHP statement, print and Print_r are functions, the statement does not return a value, the function can have a return value (even if it is not used)Print () prints only the values of a simple type variable (such as int,string)Print_r () can print out values for complex type va
breeding farm, which starts the next month of birth, and the newborn rabbit is bred as a newborn rabbit. If all the rabbits don't die, ask the 12th month, how many rabbits are there in the farm?Analysis: This is a typical recursive problem. We may as well assume the 1th month when the rabbit's number is U1, the 2nd month when the rabbit's number is U2, 3rd months when the rabbit's number is U3, ... According to test instructions, "This rabbit starts
4 889 user4# Gets the foreign key but does not sort; Lets sort skip the sort operation by passing a non-existent key as a parameter to the by option(Sort uid by user_nick_* get # get user_level_* get user_name_*)# use hash tables as parameters for by and get(Hmset user_info_1 name U1 age 9)(Hmset user_info_2 name U2 age 7)(Hmset user_info_3 name U3 age Level 8)(Hmset user_info_4 name U4 age level 6)(Sort uid by User_info_*->level) # 4 2 3 1(Sort uid
;/** * * * @author 林计钦 * @version 1.0 201 3-7-25 am 10:33:37 */public class Locktest {public static void main (string[] args) {locktest test = new Locktes T (); Create a concurrent access account MyCount MyCount = test.new MyCount ("95599200901215522", 10000); Create a Lock object lock lock = new Reentrantlock (); Create a thread pool executorservice pool = Executors.newcachedthreadpool (); Create some concurrent access users, a credit card, save, take the take
encapsulated, converted to another type of exception9. It is recommended to use E.printstacktrace () when catching anomalies;10. Classification of exceptionsThrowableError is a system unrecoverable fault that occurs by the JVMOutOfMemoryError Heap Memory OverflowStackoverflowerror Stack Memory OverflowException program can check for handled exceptionsJava.text.parseException format when parsing an objectRuntimeException Non-check exceptions, Javac ignores syntax checks for such exceptions, such
. reentrantLock;/*** Java thread: Lock ** @ author leizhimin 2009-11-5 10:57:29 */public class Test {public static void main (String [] args) {// create an account for concurrent access MyCount myCount = new MyCount ("95599200901215522", 10000); // create a Lock Object lock Lock = new Reentrant Lock (); // create a thread pool ExecutorService pool = Executors. newCachedThreadPool (); // creates some concurrent access users, one credit card, the storage, and the retrieval. It's very interesting.
ExtJS learning ------- Ext. define alias and slave name, two methods to define static methods, mixed attributes and other attributes
(1) Ext. define alias and backup name
Ext. onReady (function () {Ext. define ('user', {config: {name: 'zhang san', age: 23}, // use the alias: 'Alias _ user', // use the alternate name alternateClassName: 'alternateclassname _ user', constructor: function (config) {// constructor var me = this; me. initConfig (config) ;}}); // use three names to define var u1 = Ex
SQL statement generated during the first query, and the result is cached by User u1 = (User) s. get (User. class, 1); // No SQL statement is generated for the second query, but the result is taken from the cache p (u = u1); // true// 2. HQL Query q = s. createQuery ("from domain. user where id = 1 "); User u2 = (User) q. uniqueResult (); // The SQL statement is generated for the third query, but the result is taken from the cache p (u2 = u); // true// 3. native SQL SQLQuery q1 = s. createSQLQue
*/public class Writereadlocktest {public static void main (string[] args ) {writereadlocktest test = new Writereadlocktest (); Create a concurrent access account MyCount MyCount = test.new MyCount ("95599200901215522", 10000); Create a Lock object readwritelock lock = new Reentrantreadwritelock (false); Create a thread pool executorservice pool = Executors.newfixedthreadpool (2); Create some concurrent access users, a credit card, storage, fetch, good lively a
;/** * * * @author 林计钦 * @version 1.0 201 3-7-25 am 10:33:37 */public class Locktest {public static void main (string[] args) {locktest test = new Locktes T (); Create a concurrent access account MyCount MyCount = test.new MyCount ("95599200901215522", 10000); Create a Lock object lock lock = new Reentrantlock (); Create a thread pool executorservice pool = Executors.newcachedthreadpool (); Create some concurrent access users, a credit card, save, take the take
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