ruby programming exercises

JVM instance has only one heap space, and all threads share the heap;Stack: Each time a new thread JVM is started, it is assigned a Java stack, and the Java stack saves the thread's running state in frames;Stack frame: consists of local variable area, operand stack and frame data area;Local method Stack: Java programs often call local methods, local methods can access the JVM's runtime data area through the local method interface, so a running Java program may use some data areas related to loc

::judge (MyPoint p) {double s = (x1-p.getx0 ()) * (x1-p.getx0 ()) + (Y1-p.gety0 ()) * (Y1-p.gety0 ())-R 1*r1;if (S > 0) {return "Outside the Circle";} Else{return "within the Circle";}}Mypoint.cpp#include "MyPoint.h" void Mypoint::setpoint (Double x, double y) {x0 = X;y0 = y;} Double mypoint::getx0 () {return x0;} Double Mypoint::gety0 () {return y0;}Maintestclass.cpp#include "iostream" #include "MyCircle.h" #include "MyPoint.h" using namespace Std;void main () { Mycircle C1; MyPoint P1;c1.setc

1, P103A directory scanner. #include 2, P112Use the MMAP function program to modify the contents of the file, map the file to memory, and change it as an array!#include The exercises in the third chapter of the fourth edition of Linux programming

1, P128A program that gets the date-time format to get the date of the time.#include 2, P130, 132A program that creates temporary files, obtains user information, and outputs logs.#include 3, P141A resource that restricts the CPU consumption of the program.#include "Fourth edition of Linux Programming", chapter Fourth of the exercises

Use the pointer function to traverse the following arrays:$arr = $arr =[1, ' =>true,24=> ' Harry Potter ', ' ' = ' and ' JavaScript ', ' class ' = ' English '];Reference:Task1. Output array2. Iterate through the array before3. Traversing the array from the back forwardPHP//Defining Arrays$arr=[1, ' ' = =true,24=> ' Harry Potter ', ' ' + ' javascript ', ' class ' = ' 中文版 '];//which output function does the output array use? Echo' ; Print_r($arr);Echo' ;//iterating through an array from the GO//Fi

"; Splitting.split (regex); }}Question NinethPackage Net.mindview.strings.test9;import net.mindview.strings.Splitting;PublicClassTest9 {PublicStaticvoidMain (string[] args) {String regex ="a| e| i| o| U|a|e|i|o|u";//A case-insensitive match can also be enabled through an inline flag expression (? i). String regex1 ="(? i) a|e|i|o|u";//[ABC "denotes a or B or c String regex2 = " (? i) [Aeiou]" ; System. out.println (Splitting.knights.replaceAll (regex, " Span style= "COLOR: #800000" >_ "out.pri

"/>5. Write a shell script that intercepts the first column in the line containing the keyword ' abc ' in the file Test.log (assuming the delimiter is ":"), then sorts the intercepted numbers (assuming the first column is a number) and prints out the columns with more than 10 repetitions;650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/71/AF/wKioL1XW09LgcsqDAAE3Do3V-9M733.jpg "title=" 5.jpg " alt= "Wkiol1xw09lgcsqdaae3do3v-9m733.jpg"/>6. Write the shell script to determine whether the

Because it is also the way of learning, first draw ideas, code and look at the learning of others, the final is based on the idea of completion, may be relatively simple, late in to improve and changeThe above is a simple classSend a successfulIn the process of writing a few problems encountered, according to the URL of the request is not the same, the request header stitching also needs to change, here the requested URL is http://www.cnblogs.com/mvc/PostComment/Add.aspx static connection, all p

Create or Replace procedurePr_first is--a variableV_avarchar2( -) := 'Someday my life will come to an end';--a constantC_B constantvarchar2( -) := 'and you will be crowned king!'; V_XINGM t_hq_ryxx.xingm%Type;type Ty_ry isrecord (v_nianl t_hq_ryxx.nianl%Type,v_gongz Number(Ten,2)); V_ry Ty_ry;v_ryrow t_hq_ryxx%RowType;begin SelectXingm intoV_xingm fromT_hq_ryxxwhereRowNum= 1;d Bms_output.put_line ('protagonist is' ||v_xingm);SelectNianl,gongz intoV_ry fromT_hq_ryxxwhereRowNum= 1;d bms_output.pu

: he is a girl If it is a character other than b/b/g/g, it is displayed: I don ' t know.#! /bin/bashecho -n your choice:read choicecase in[g,g]Echo "She is a girl. " " "He's a boy. " " ;; *)echo"I don t know. " " ;; Esac6, write the shell script, implement the subtraction operation between the two variables.#! /bin/Bashread-P"imput NUM1:"Aread-P"input num2:"Bread-P"input Operator:"o Case$oinch+) Let"res=a+b"Echo$res;;-) Let"Res=a-b"Echo$res;;/)awk'begin{printf%.2f\n ",'$a'/'$b'}';;*) Let"res=a

already exists, you do not need to create the user by default Examples of executing scripts:#添加一位叫reeeed教师，3位叫deeeer的学生[[emailprotected] ~]# ./userctr.sh add reeeed deeeer 3User [reeeed] create successfully.reeeed:2bf168User [deeeer1] create successfully.deeeer1:39adcdUser [deeeer2] create successfully.deeeer2:a12201User [deeeer3] create successfully.deeeer3:4088d2#参数不正确时提示[[emailprotected] ~]# ./userctr.sh add 123 321 11Parameter error!#输入不规范时的提示[[emailprotected] ~]# ./userctr.sh add 123