标签:generate question soft cin database shu 数组 map 选择
主要思路:在完成控制出题界面后,根据选择控制输出,将答案计算出来,连接到数据库,其中还涉及到最大公约数计算分数运算。
源代码:
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>出题系统</title> </head> <body> <h2>出题系统</h2> <form action="check.jsp" method="post"> 请输入出题数量:<input type="text" name = "username"><br> 请输入运算元数: <input type="text" name="choose1"><br> 输入数值范围:<input type="text" name="choose2"><br><hr> 1.整数四则运算 2.真分数四则运算<br> 选择: 有<input type="radio" name="choose"value=1> 无<input type="radio" name="choose"value=2><br> 有无乘除: 有<input type="radio" name="choose3"value=1> 无<input type="radio" name="choose3"value=2><br> 有无负数: 有<input type="radio" name="choose4"value=1> 无<input type="radio" name="choose4"value=2><br> 有无余数: 有<input type="radio" name="choose6"value=1> 无<input type="radio" name="choose6"value=2><br> 有无括号: 有<input type="radio" name="choose7"value=1> 无<input type="radio" name="choose7"value=2><br> 是否显示答案: 有<input type="radio" name="choose5"value=1> 无<input type="radio" name="choose5"value=2><br> <input type="submit" value="出题"> </form> </body> </html>
Yunsuan.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ page import= "size.com.* "%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <% JspWriter mout=pageContext.getOut(); String zh = request.getParameter("shuliang"); String zhh = request.getParameter("choose"); String Min=request.getParameter("xiao"); String Max=request.getParameter("da"); String shu = request.getParameter("geshu"); String chu = request.getParameter("chengchu"); String hao=request.getParameter("kuohao"); int x=Integer.parseInt(zh); int y=Integer.parseInt(zhh); int min=Integer.parseInt(Min); int max=Integer.parseInt(Max); int z=Integer.parseInt(shu); int xx=Integer.parseInt(chu); int t=Integer.parseInt(hao); int m,n,j,jj; char []ch=new char[4]; int a1,b1; ch[0]=‘+‘; ch[1]=‘-‘; ch[2]=‘*‘; ch[3]=‘/‘; if(y==1) { int []M=new int[10]; String []N=new String[10]; for(int ii=1;ii<=x;ii++) { mout.print("30道题目"); mout.print("<br>"); String []A=new String[30]; a1=(int)(Math.random()*(z-1)+1); b1=a1+1; for(int i=0;i<30;i++) { A[i]=""; for(int o=0;o<z;o++) { M[o]=(int)(Math.random()*max+min); if(xx==1) j=(int)(Math.random()*4+1); else j=(int)(Math.random()*2+1); if(o==z-1) A[i]=A[i]+M[o]; else A[i]=A[i]+M[o]+ch[j-1]; } for(int k=0;k<i;k++) { if(A[i].equals(A[k])) { i--; break; } } } String[] B=new String[30]; for(int i=0;i<30;i++) { B[i]=A[i]; } if(t==1) { for(int iii=0;iii<30;iii++) { String ss=A[iii]; int num =z-1; int length = ss.length(); int[] in = new int[num]; int i=0; for(int j1=0;j1<ss.length();j1++) { if(ss.charAt(j1)==‘+‘||ss.charAt(j1)==‘/‘||ss.charAt(j1)==‘-‘||ss.charAt(j1)==‘*‘) { in[i] = j1; i++; } } /*for(int m1=0;m1<num;m1++) { mout.print("<br>"); }*/ StringBuffer temp = new StringBuffer(ss); int former = (int)(Math.random()*length+1); int end = (int)(Math.random()*length+1); while(num<=2&&former !=1&&end != length) { former = (int)(Math.random()*length+1); end = (int)(Math.random()*length+1); } if(former == 1) { temp.insert(former-1, ‘(‘); int next = (int)(Math.random()*num); while(next == 0) next = (int)(Math.random()*num); temp.insert(in[next]+1, ‘)‘); end--; } if(former >1&&end <length&&num>2) { int first = (int)(Math.random()*num);//括起来的第一个数 int next = (int)(Math.random()*num);//括起来的最后一个数 while(next-first<=1) { first = (int)(Math.random()*num);//括起来的第一个数 next = (int)(Math.random()*num);//括起来的最后一个数 } temp.insert(in[first]+1, ‘(‘); temp.insert(in[next]+1, ‘)‘); } if(end == length) { temp.insert(end, ‘)‘); int first = (int)(Math.random()*num); while(first == num-1) first = (int)(Math.random()*num); temp.insert(in[first]+1, ‘(‘); } ss = temp.toString(); A[iii]=ss; } } double[] K=new double[30]; double[] C=new double[30]; for(int i=0;i<30;i++) { if(t==1) { while(A[i].indexOf(‘(‘)!=-1) { int left=0; int right=A[i].length(); char op; for(int i4=0;i4<A[i].length();i4++) { if(A[i].charAt(i4)==‘(‘) { left=i4; } if(A[i].charAt(i4)==‘)‘) { right=i4; break; } } String strq=A[i].substring(left+1,right); mout.print("<br>"); mout.print(strq); mout.print("<br>"); /* C[i]=YL.fun1(strq); B[i]=A[i].substring(0,left-1)+String.valueOf(C[i])+A[i].substring(right+1,A[i].length()-1);*/ } /*K[i]=YL.fun1(B[i]); mout.print("<br>"); mout.print(C[i]); mout.print("<br>");*/ } else K[i]=YL.fun1(B[i]); } for(int i=0;i<30;i++) { mout.print((i+1)+". "+A[i]); mout.print("<br>"); } mout.print("答案:"); mout.print("<br>"); for(int i=0;i<30;i++) { mout.print((i+1)+"、"+K[i]); mout.print("<br>"); } mout.print("-"+ii+"-"); mout.print("<br><br><br>"); } } if(y==2) { for(int ii=1;ii<=x;ii++) { int a,b,c,d; String aa,bb; mout.print("30道题目"); mout.print("<br>"); String []B=new String[30]; for(int i=0;i<30;i++) { a=(int)(Math.random()*100+1); b=(int)(Math.random()*100+1); if(a>b) aa=b+"/"+a; else if(a<b) aa=a+"/"+b; else aa="1"; c=(int)(Math.random()*100+1); d=(int)(Math.random()*100+1); if(c>d) bb=d+"/"+c; else if(c<d) bb=c+"/"+d; else bb="1"; j=(int)(Math.random()*4+1); B[i]=aa+" "+ch[j-1]+" "+bb+"="; for(int k=0;k<i;k++) { if(B[i].equals(B[k])) { i--; break; } } } for(int i=0;i<30;i++) { mout.print((i+1)+". "+B[i]); mout.print("<br>"); } mout.print("-"+ii+"-"); mout.print("<br><br><br>"); mout.print("-"+ii+"-"); mout.print("<br><br><br>"); } } %> </body> </html><br><br><br><br>
Caculate.class
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package demo; import java.util.HashMap; import java.util.Map; import java.util.Stack; public class Caculate { /*public static void main(String[] args) { // TODO Auto-generated method stub String str1="22+4*(2+3)"; double result=fun2(str1); System.out.println(result); }*/ public static Map pro= new HashMap(); public static void init() { pro.put( ‘+‘ , 1 ); pro.put( ‘-‘ , 1 ); pro.put( ‘*‘ , 2 ); pro.put( ‘÷‘ , 2 ); } public static int getIndex(String str) { int index1=(str.indexOf( ‘+‘ )==- 1 ?str.length():str.indexOf( ‘+‘ )); int index2=(str.indexOf( ‘-‘ )==- 1 ?str.length():str.indexOf( ‘-‘ )); int index3=(str.indexOf( ‘*‘ )==- 1 ?str.length():str.indexOf( ‘*‘ )); int index4=(str.indexOf( ‘÷‘ )==- 1 ?str.length():str.indexOf( ‘÷‘ )); int index=index1<index2?index1:index2; index=index<index3?index:index3; index=index<index4?index:index4; return index; } public static double cal( char op, double num1, double num2) { switch (op) { case ‘+‘ : return num1+num2; case ‘-‘ : return num1-num2; case ‘*‘ : return num1*num2; default : return num1%num2; } } public static double fun1(String str) { init(); Stack st1= new Stack(); Stack st2= new Stack(); int fop= 0 ; while (str.length()> 0 ) { int index=getIndex(str); st1.push(Double.parseDouble(str.substring( 0 ,index))); if (index!=str.length()) { char op=str.charAt(index); str=str.substring(index+ 1 ); while ( true ) { if (( int )pro.get(op)>fop) { st2.push(op); fop=( int )pro.get(op); break ; } else { double num2= ( double ) st1.pop(); double num1=( double ) st1.pop(); double result=cal(( char )st2.pop(),num1,num2); st1.push(result); if (st2.size()== 0 ) { st2.push(op); fop=( int )pro.get(op); break ; } char cop=( char ) st2.pop(); fop=( int )pro.get(cop); st2.push(cop); } } } else { break ; } } while (st2.size()!= 0 ) { double num2=( double ) st1.pop(); double num1=( double ) st1.pop(); char op=( char ) st2.pop(); st1.push(cal(op,num1,num2)); } double result=( double ) st1.pop(); return result; } public static double fun2(String str) { while (str.indexOf( ‘(‘ )!=- 1 ) { int left= 0 ; int right=str.length(); char op; for ( int i= 0 ;i<str.length();i++) { if (str.charAt(i)== ‘(‘ ) { left=i; } if (str.charAt(i)== ‘)‘ ) { right=i; break ; } } str=str.substring( 0 ,left)+fun1(str.substring(left+ 1 ,right))+str.substring(right+ 1 ); } return fun1(str); } } |
fencal.class
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package demo; public class fencal { public static String fenmu(String ss, int n, int m) { //n 几元,m 有无括号 ss = ‘=‘ +ss+ ‘=‘ ; String result= "" ; String cal = "" ; int num = n* 2 + 1 ; if (m == 1 ) { num = num + 2 ; } int length = ss.length(); int [] in = new int [num]; //操作符下标数组 String[] str = new String[n]; //分母数组 String[] str1 = new String[n]; //分子数组 int i= 0 ; //操作符计数器 int j= 0 ; //字符串计数器 int z= 0 ; //分母数组计数器 double fm= 1 ; for (j= 0 ;j<length;j++) { if (ss.charAt(j)== ‘+‘ ||ss.charAt(j)== ‘÷‘ ||ss.charAt(j)== ‘-‘ ||ss.charAt(j)== ‘*‘ ||ss.charAt(j)== ‘(‘ ||ss.charAt(j)== ‘)‘ ||ss.charAt(j)== ‘/‘ ||ss.charAt(j)== ‘=‘ ) { in[i] = j; i++; } } /*for(i=0;i<num;i++) System.out.println(in[i]);*/ for (i= 0 ;i<num;i++) { if (ss.charAt(in[i]) == ‘/‘ ) { str[z] = ss.substring(in[i]+ 1 , in[i+ 1 ]); z++; } } /*for(z=0;z<n;z++) System.out.println(str[z]);*/ for (z= 0 ;z<n;z++) { double fmm = Double.parseDouble(str[z]); fm = fm*fmm; } System.out.println( "分母为" +fm); return "" +fm; } public static String shizi(String ss, int n, int m) { String shizi = "" ; ss = ‘=‘ +ss+ ‘=‘ ; String result= "" ; String cal = "" ; int num = n* 2 + 1 ; if (m == 1 ) { num = num + 2 ; } int length = ss.length(); int [] in = new int [num]; //操作符下标数组 String[] str = new String[n]; //分母数组 String[] str1 = new String[n]; //分子数组 int i= 0 ; //操作符计数器 int j= 0 ; //字符串计数器 int z= 0 ; //分母数组计数器 double fm= 1 ; for (j= 0 ;j<length;j++) { if (ss.charAt(j)== ‘+‘ ||ss.charAt(j)== ‘÷‘ ||ss.charAt(j)== ‘-‘ ||ss.charAt(j)== ‘*‘ ||ss.charAt(j)== ‘(‘ ||ss.charAt(j)== ‘)‘ ||ss.charAt(j)== ‘/‘ ||ss.charAt(j)== ‘=‘ ) { in[i] = j; i++; } } for (i= 0 ;i<num;i++) System.out.println(in[i]); for (i= 0 ;i<num;i++) { if (ss.charAt(in[i]) == ‘/‘ ) { str[z] = ss.substring(in[i]+ 1 , in[i+ 1 ]); z++; } } /*for(z=0;z<n;z++) System.out.println(str[z]);*/ for (z= 0 ;z<n;z++) { double fmm = Double.parseDouble(str[z]); fm = fm*fmm; } System.out.println( "分母为" +fm); z= 0 ; for (i= 0 ;i<num;i++) { if (ss.charAt(in[i]) == ‘/‘ ) { str1[z] = ss.substring(in[i- 1 ]+ 1 , in[i]); z++; } } for (z= 0 ;z<n;z++) { double fmm = Double.parseDouble(str[z]); double fzz = Double.parseDouble(str1[z]); double fz = fm/fmm*fzz; str1[z] = "" +fz; } for (z= 0 ;z<n;z++) System.out.println( "分子" +str1[z]); z= 0 ; int numm = n- 1 ; if (m == 1 ) numm = numm + 2 ; String[] str2 = new String[numm]; for (i= 0 ;i<num;i++) { if (ss.charAt(in[i])!= ‘=‘ &&ss.charAt(in[i])!= ‘/‘ ) { str2[z] = "" +ss.charAt(in[i]); z++; } } /*for(z=0;z<numm;z++) System.out.println(str2[z]);*/ if (m == 1 ) { for (i= 0 ;i<numm;i++) { if (str2[i].equals( "(" )&&i> 0 ) { j=i- 1 ; str2[j] = str2[j] + str2[i]; break ; } } for (j=j+ 1 ;j<numm- 1 ;j++) str2[j]=str2[j+ 1 ]; } if (m == 1 ) { for (i= 0 ;i<numm;i++) { if (str2[i].equals( ")" )&&i<numm- 1 ) {System.out.println( "zou" ); j=i+ 1 ; str2[i] = str2[i]+str2[j]; break ; } } for (;j<numm- 1 ;j++) str2[j]=str2[j+ 1 ]; } for (z= 0 ;z<numm;z++) System.out.println(str2[z]); if (str2[ 0 ].equals( "(" )) { for (i= 0 ;i<n- 1 ;i++) { shizi = shizi + str2[i]+ "" + str1[i]; } shizi = shizi + str2[i]+str1[n- 1 ]; } else if (str2[numm- 1 ].equals( ")" )) { for (i= 0 ;i<n- 1 ;i++) { shizi = shizi + str1[i]+ "" + str2[i]; } shizi = shizi +str1[n- 1 ]+str2[i]; } else { for (i= 0 ;i<n- 1 ;i++) { shizi = shizi + str1[i]+ "" + str2[i]; } shizi = shizi + str1[n- 1 ]; } return shizi; } public static int getGongYueShu( int a, int b){ int t = 0 ; if (a<b){ t =a; a=b; b=t; } int c=a%b; if (c== 0 ) { return b; } else return getGongYueShu(a,c); } } |
Action.class
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package demo; import java.sql.*; public class Action { public void add( int num,String str1,String str2) throws SQLException{ Connection conn = Main.getConn(); //获取数据库连接 Statement st = conn.createStatement(); String sql = "insert into calTable([number],[question],[answer]) values(‘" + num + "‘,‘" + str1 + "‘,‘" + str2 + "‘)" ; st.executeUpdate(sql); st.close(); conn.close(); } } |
Main.class
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package demo; import java.sql.*; public class Main { public static Connection getConn(){ String driverName= "com.microsoft.sqlserver.jdbc.SQLServerDriver" ; Connection dbConn = null ; String dbURL= "jdbc:sqlserver://127.0.0.1:1433;DatabaseName=Size" ; String userName= "sa" ; String userPwd= "123456" ; try { Class.forName(driverName); System.out.println( "加载驱动成功!" ); } catch (Exception e){ e.printStackTrace(); System.out.println( "加载驱动失败!" ); } try { dbConn=DriverManager.getConnection(dbURL,userName,userPwd); System.out.println( "连接数据库成功!" ); } catch (Exception e) { e.printStackTrace(); System.out.print( "SQL Server连接失败!" ); } return dbConn; } } |
截图:
总结:这次四则运算的实现是我和于莅翔同学一起完成的 ,在我们的共同努力下,将此次作业逐步完善并修改,虽然其中有些不足,但也看到了结对编程的好处,以后会更加努力。
标签:generate question soft cin database shu 数组 map 选择
原文地址:http://www.cnblogs.com/jokerr/p/6687048.html