设计思路：
（1）结合之前的.java代码（之前的四则运算程序）实现网页化
（2）先利用最近web课上学的html语言实现首页（功能为对题目进行定制）
（3）在用户定制题目后把参数传给jsp文件
（4）jsp文件调用。java文件实现四则运算式的输出和答案校验
HuanYing.html
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta charset="UTF-8"> 5 <title>四则运算答题系统首页</title> 6 7 <!-- 强制浏览器编码设为简体中文(GB2312),name为搜索引擎提供的关键字列表,Description用来告诉搜索引擎你的网站主要内容 --> 8 <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 9 <meta name="keywords" content="keyword1,keyword2,keyword3"> 10 <meta name="description" content="this is my page"> 11 <Meta name=Author Content=李营，1058584348@qq.com> 12 13 </head> 14 <body background="1.jpg"> 15 <h1 align="center">四则运算</h1> 16 <!-- 传递参数值给index.jsp处理 --> 17 <form action="index.jsp" method="post" action="My.jsp" method="post"> 18 <!-- 互斥选择 --> 19 <center> 20 <br>请选择上限(分数没有上下限): 21 <select name="TopNumber"> 22 <option value=20>20</option> 23 <option value=20>30</option> 24 <option value=20>50</option> 25 <option value=20>80</option> 26 <option value=20>100</option> 27 </select><br> 28 <br>请选择下限(分数没有上下限): 29 <select name="BaseNumber"> 30 <option value=0>0</option> 31 <option value=1>1</option> 32 <option value=3>3</option> 33 <option value=5>5</option> 34 <option value=10>10</option> 35 </select><br> 36 <!-- 多项选择，在jsp中用数组保存 --> 37 <br>请在以下选项中打勾： 38 <input type="checkbox" name="function" value=1>有乘除 39 <input type="checkbox" name="function" value=2>无余数 40 <input type="checkbox" name="function" value=3>有括号 41 <br> 42 <br> 43 <br> 44 <input type="submit" name="submit" value="确定"> 45 </center> 46 </form> 47 <br><br><br><br><br><br><br><br><br><br><br> 48 <p align="right">作者：信1405-2 李营</p> 49 </body> 50 </html>
index.jsp
1 <%@ page language="java" contentType="text/html; charset=utf-8" 2 3 pageEncoding="utf-8"%> 4 <%@ page import="SiZeYunSuan.*"%> 5 <% 6 String path = request.getContextPath(); 7 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 8 %> 9 10 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 11 <html> 12 <head> 13 <base href="<%=basePath%>"> 14 15 <title>答题</title> 16 <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 17 <meta http-equiv="pragma" content="no-cache"> 18 <meta http-equiv="cache-control" content="no-cache"> 19 <meta http-equiv="expires" content="0"> 20 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> 21 <meta http-equiv="description" content="This is my page"> 22 <!-- 23 <link rel="stylesheet" type="text/css" href="styles.css"> 24 --> 25 </head> 26 27 <body background="images/A2.jpg"> 28 29 <% 30 String[] s=new String[30]; 31 float k[]=new float[30]; 32 SiZeYunSuan a=new SiZeYunSuan(); 33 34 request.setCharacterEncoding("UTF-8"); 35 String[] function = request.getParameterValues("function"); 36 String TopNumber,BaseNumber; 37 TopNumber=request.getParameter("TopNumber"); 38 BaseNumber=request.getParameter("BaseNumber"); 39 a.SetValue(a.StrToNum(TopNumber),a.StrToNum(BaseNumber)); 40 if(function!=null){ 41 for(int i=0;i<function.length;i++){ 42 if(function[i].equals("1")) 43 { 44 a.SetValue1(1); 45 } 46 if(function[i].equals("2")) 47 { 48 a.SetValue2(1); 49 } 50 if(function[i].equals("3")) 51 { 52 a.SetValue3(0); 53 } 54 } 55 } 56 57 58 %> 59 <form action="MyJsp.jsp" method="post"> 60 <center> 61 <% 62 a.main(); 63 float temp; 64 String[] se=new String[30]; 65 for(int i=0;i<30;i++){ 66 s[i]=a.cs(i); 67 se[i]="name"; 68 se[i]=se[i]+i; 69 k[i]=a.css(i); 70 out.print("<tr>"+s[i]+"</tr>"); 71 out.println("<br>"); 72 73 74 %> 75 <input type="text" name=<%=se[i] %>><br> 76 <% 77 } 78 session.setAttribute( "v1",s); 79 session.setAttribute( "v2",k); 80 %> 81 <br><input type="submit" name="submit" value="提交"> 82 83 <% 84 85 86 %> 87 </center> 88 </form> 89 90 91 92 93 </body> 94 </html>
MyJsp.jsp
1 <%@ page language="java" import="java.util.*" pageEncoding="gb2312" contentType="text/html; charset=gb2312"%> 2 <%@ page import="SiZeYunSuan.*"%> 3 <% 4 String path = request.getContextPath(); 5 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 6 %> 7 8 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 9 <html> 10 <head> 11 <base href="<%=basePath%>"> 12 13 <title>结果</title> 14 15 <meta http-equiv="pragma" content="no-cache"> 16 <meta http-equiv="cache-control" content="no-cache"> 17 <meta http-equiv="expires" content="0"> 18 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> 19 <meta http-equiv="description" content="This is my page"> 20 <!-- 21 <link rel="stylesheet" type="text/css" href="styles.css"> 22 --> 23 24 </head> 25 26 <body background="1.jpg"> 27 <% request.setCharacterEncoding("UTF-8");%> 28 <center> 29 <% 30 31 32 String[] name=new String[30]; 33 String[] sum=new String[30]; 34 SiZeYunSuan a=new SiZeYunSuan(); 35 float sum1[]=new float[30]; 36 int right=0; 37 String[] s= (String[])session.getAttribute("v1"); 38 float[] k=(float[])session.getAttribute("v2"); 39 40 for(int i=0;i<30;i++) 41 sum1[i]=0; 42 for(int i=0;i<30;i++){ 43 name[i]="name"; 44 name[i]=name[i]+i; 45 46 sum[i]=request.getParameter(name[i]); 47 //sum[i]=request.getParameterValues(name[i])"; 48 out.print(s[i]); 49 out.print("<tr>"+sum[i]+"</tr>"); 50 if(sum[i]=="") 51 out.print("未回答！"); 52 else{ 53 if(((int)(k[i]*100))%100!=0) 54 sum1[i]=a.StrToFloat1(sum[i]); 55 else 56 sum1[i]=a.StrToFloat(sum[i]); 57 if(Math.abs(sum1[i]*100-k[i]*100)<4){ 58 out.print(" 回答正确！"); 59 right++; 60 } 61 else 62 out.print(" 回答错误，正确答案是： "+k[i]); 63 } 64 65 out.println("<br>"); 66 } 67 out.print("总共做对 "+right+" 题，正确率为："+(right/30.0)*100+" %"); 68 %><br> 69 <input type="button" value="返回首页" onClick="window.location.href='HuanYing.html'"> 70 <input type="button" value="关闭" onClick="window.close();"> 71 </center> 72 </body> 73 </html>
SiZeYunSuan.java
1 package SiZeYunSuan; 2 3 import java.util.*; 4 public class SiZeYunSuan { 5 static int MAX=100; 6 static String formula = ""; //当前算式 7 static String[] buffer = new String[MAX]; //缓冲区数组 8 static int TopNumber; //上限 9 static int BaseNumber; //下限 10 static int IsMulDlvExist; //是否有乘除 11 static int Amount; //操作数的个数 12 static int BracketNum; //括号个数 13 static int[] LBraket = new int[2]; //左括号的位置 14 static int[] RBraket = new int[2]; //右括号的位置 15 static int IsNeg; //是否有负数 16 static int IsRem; //是否有余数 17 static int IsBra; //是否有括号 18 static int IsRep; //是否重复 19 static float[] Result= new float[MAX]; //正确结果数组 20 static char lastOp; //记录上个运算符是否为除号 21 22 //优先级数组 23 static char[][] prior = { 24 { '>', '>', '<', '<', '<', '>', '>' }, 25 { '>', '>', '<', '<', '<', '>', '>' }, 26 { '>', '>', '>', '>', '<', '>', '>' }, 27 { '>', '>', '>', '>', '<', '>', '>' }, 28 { '<', '<', '<', '<', '<', '=', ' ' }, 29 { '>', '>', '>', '>', ' ', '>', '>' }, 30 { '<', '<', '<', '<', '<', ' ', '=' } 31 }; 32 33 //将操作符转化为优先级数组的下标 34 static int Change(String Oper) 35 { 36 switch (Oper.charAt(0)) 37 { 38 case '+': return 0; 39 case '-': return 1; 40 case '*': return 2; 41 case '/': return 3; 42 case '(': return 4; 43 case ')': return 5; 44 case '=': return 6; 45 default: return 6; 46 } 47 } 48 static int Change(char Oper) 49 { 50 switch (Oper) 51 { 52 case '+': return 0; 53 case '-': return 1; 54 case '*': return 2; 55 case '/': return 3; 56 case '(': return 4; 57 case ')': return 5; 58 case '=': return 6; 59 default: return 6; 60 } 61 } 62 static //返回优先级的大小 63 char Precede(char Oper, char ch) 64 { 65 return prior[Change(Oper)][Change(ch)]; 66 } 67 68 //计算两个数的结果 69 static float Operate(float first, char oper1, float second) 70 { 71 switch (oper1) 72 { 73 case '+': 74 { 75 return (first + second); 76 } 77 case '-': 78 { 79 if (first-second<0) 80 { 81 IsRep = 1; 82 return 0; 83 } 84 return (first - second); 85 } 86 case '*': 87 { 88 return (first * second); 89 } 90 case '/': 91 { 92 if (second == 0) 93 { 94 IsRep = 1; 95 return 0; 96 } 97 return (first / second); 98 } 99 default: return 0; 100 } 101 } 102 103 //数字的个数 104 static void NumberAmount() 105 { 106 Amount = 2 + (int)((Math.random())*3); 107 } 108 109 //加左括号 随机选择在第几个数字前面加括号 110 static void AddLbracket(){ 111 for (int j = 0; j < 2; j++) 112 LBraket[j] = 0; 113 if (Amount == 2) 114 { 115 BracketNum = 0; 116 } 117 if (Amount == 3){ 118 BracketNum = (int)((Math.random())*2); 119 } 120 if (Amount > 3) 121 { 122 BracketNum = (int)((Math.random())*3); 123 } 124 for (int i = 0; i < BracketNum; i++){ 125 LBraket[i] = 1 + (int)((Math.random())*(Amount - 2)); 126 } 127 } 128 //加右括号 129 static void AddRbracket(){ 130 for (int j = 0; j < 2; j++) 131 RBraket[j] = 0; 132 int choose; 133 int trance; 134 if (BracketNum == 1){ 135 RBraket[0] = LBraket[0] + 1 +(int)((Math.random())* (Amount - LBraket[0])); 136 } 137 if (BracketNum == 2) 138 139 { 140 //把最左边的左括号放在第一个数组中 141 if (LBraket[0] < LBraket[1]) 142 { 143 trance = LBraket[0]; 144 LBraket[0] = LBraket[1]; 145 LBraket[1] = trance; 146 } 147 //当两个左括号之间相差有点远时有2中右括号添加方法 148 if (LBraket[0] - LBraket[1]>2){ 149 choose = (int)((Math.random())*2); 150 if (choose == 0){ 151 RBraket[0] = LBraket[0] + 1 + (int)((Math.random())*(Amount - LBraket[0])); 152 RBraket[1] = LBraket[0] + 1 + (int)((Math.random())*(Amount - LBraket[0])); 153 } 154 if (choose == 1) 155 { 156 RBraket[0] = LBraket[0] + 1 + (int)((Math.random())*(Amount - LBraket[0])); 157 RBraket[1] = LBraket[1] + 1 + (int)((Math.random())*(LBraket[0] - 2)); 158 } 159 } 160 else 161 { 162 RBraket[0] = LBraket[0] + 1 + (int)((Math.random())*(Amount - LBraket[0])); 163 RBraket[1] = LBraket[0] + 1 + (int)((Math.random())*(Amount - LBraket[0])); 164 if (LBraket[0] == LBraket[1] && RBraket[0] == RBraket[1]){ 165 LBraket[0] = LBraket[1] = 0; 166 RBraket[0] = RBraket[1] = 0; 167 BracketNum = 0; 168 169 } 170 if (LBraket[1] == 1 && (RBraket[0] == Amount || RBraket[1] == Amount)) 171 { 172 LBraket[0] = LBraket[1] = 0; 173 RBraket[0] = RBraket[1] = 0; 174 BracketNum = 0; 175 } 176 177 } 178 } 179 } 180 181 //随机产生最简真分数 182 static void Score(){ 183 int Left, Right; 184 Left = BaseNumber + (int)((Math.random())*(TopNumber - BaseNumber + 1)); 185 Right = BaseNumber + (int)((Math.random())*(TopNumber - BaseNumber + 1)); 186 while (Left >= Right || Left == 0) 187 { 188 Left = BaseNumber + (int)((Math.random())*(TopNumber - BaseNumber + 1)); 189 Right = BaseNumber + (int)((Math.random())*(TopNumber - BaseNumber + 1)); 190 } 191 int max = 1; 192 //求最大公约数 193 for (int i = 2; i <= Left; i++) 194 { 195 if (Left%i == 0 && Right%i == 0) 196 { 197 max = i; 198 } 199 } 200 if (max > 1) 201 { 202 Left /= max; 203 Right /= max; 204 } 205 formula += "(" + Left + "/" + Right + ")"; 206 } 207 208 //随机生成操作符 209 static void Operater() 210 { 211 int choose; 212 char op='+'; 213 if (IsMulDlvExist == 1) 214 choose = 1 + (int)((Math.random())* 4); 215 else 216 choose = 1 + (int)((Math.random())*2); 217 218 switch (choose) 219 { 220 case 1:{op = '+'; lastOp = '+'; break; } 221 case 2:{op = '-'; lastOp = '-'; break; } 222 case 3:{op = '*'; lastOp = '*'; break; } 223 case 4: 224 { 225 //防止连续除法产生运算误区 226 op = '/'; 227 if (lastOp == '/') 228 IsRep = 1; 229 else 230 lastOp = '/'; 231 break; 232 } 233 } 234 formula += op; 235 } 236 237 //随机生成整数 238 static void Integer(){ 239 int num; 240 num = BaseNumber + (int)((Math.random())*(TopNumber - BaseNumber + 1)); 241 formula += num; 242 } 243 //创建算式 244 static void CreateNumber(){ 245 for (int k = 1; k <= Amount; k++) 246 { 247 248 for (int i = 0; i < 2; i++){ 249 if (LBraket[i] == k) 250 formula += "("; 251 } 252 253 int cho; 254 cho = (int)((Math.random())*2); 255 if (cho == 0) 256 { 257 Integer(); 258 } 259 else 260 Score(); 261 for (int j = 0; j < 2; j++){ 262 if ((RBraket[j] == k) && RBraket[j] != 0) 263 formula += ")"; 264 } 265 if (k == Amount) 266 formula += "="; 267 else 268 Operater(); 269 } 270 } 271 //检查是否重复及判断括号是否添加正确 272 static int Repeat(int time){ 273 buffer[time] = formula; 274 int juege = 0; 275 int trance; 276 for (int i = 0; i < time; i++) 277 { 278 if (buffer[i] == buffer[time]) 279 { 280 juege = 1; 281 break; 282 } 283 } 284 if (IsBra != 1) 285 { 286 if (BracketNum == 1) 287 { 288 if (LBraket[0] == 1 && RBraket[0] == Amount) 289 juege = 1; 290 } 291 if (BracketNum == 2) 292 { 293 if (RBraket[0] < RBraket[1]) 294 { 295 trance = RBraket[0]; 296 RBraket[0] = RBraket[1]; 297 RBraket[1] = trance; 298 } 299 if (LBraket[1] == 1 && RBraket[0] == Amount&&LBraket[0] < RBraket[1]) 300 juege = 1; 301 } 302 } 303 return juege; 304 } 305 static float EvaluateExpression(){ 306 //Stack OPTR=new Stack(); 307 //Stack OPND=new Stack(); 308 float[] OPND=new float[MAX]; 309 char[] OPTR =new char[MAX]; 310 int Ntop=0; 311 int Ctop=0; 312 //InitOperStack(OPTR); 313 //OPTR.push("="); 314 OPTR[Ctop++]='='; 315 //PushOper(OPTR, '='); 316 //InitNumStack(OPND); 317 int count = 0; 318 float Num = 0, first, second; 319 char oper1; 320 char bracket1; 321 while (true) 322 { 323 Num = 0; 324 //读取数字 325 while (formula.charAt(count) >= '0'&&formula.charAt(count) <= '9') 326 { 327 if (formula.charAt(count) == '0') 328 { 329 if (count == 0) 330 //OPND.push(new Float(0)); 331 OPND[Ntop++]=0; 332 if (count != 0 && !(formula.charAt(count-1) >= '0'&&formula.charAt(count-1) <= '9')) 333 //OPND.push(new Float(0)); 334 OPND[Ntop++]=0; 335 } 336 337 Num = Num * 10; 338 Num = Num + formula.charAt(count) - 48; 339 count++; 340 341 } 342 if (Num > 0) 343 { 344 //OPND.push(new Float(Num)); 345 //PushNum(OPND, Num); 346 OPND[Ntop++]=Num; 347 } 348 if (formula.charAt(count) == '='&&OPTR[Ctop-1] == '=') 349 { 350 break; 351 } 352 //判断运算符优先级 353 354 switch (Precede(OPTR[Ctop-1], formula.charAt(count))) 355 { 356 case '<': 357 { 358 //OPTR.push(formula.charAt(count)); 359 OPTR[Ctop++]=formula.charAt(count); 360 //PushOper(OPTR, formula.str()[count]); 361 count++; 362 break; 363 } 364 case '>': 365 { 366 //PopOper(OPTR, oper1); 367 //oper1=(char) OPTR.pop(); 368 oper1=OPTR[--Ctop]; 369 //PopNum(OPND, second); 370 //second=(float) OPND.pop(); 371 second=OPND[--Ntop]; 372 //PopNum(OPND, first); 373 //first=(float)OPND.pop(); 374 first=OPND[--Ntop]; 375 //PushNum(OPND, Operate(first, oper1, second)); 376 //OPND.push(Operate(first, oper1, second)); 377 OPND[Ntop++]=Operate(first, oper1, second); 378 break; 379 } 380 case '=': 381 { 382 //PopOper(OPTR, bracket1); 383 //bracket1=(char) OPTR.pop(); 384 bracket1=OPTR[--Ctop]; 385 count++; 386 } 387 } 388 } 389 return OPND[Ntop-1]; 390 } 391 392 public static void SetValue(int IsMulDlvExist1,int IsRem1,int IsBra1,int TopNumber1,int BaseNumber1) 393 { 394 IsMulDlvExist=0; 395 BaseNumber=0; 396 TopNumber=10; 397 IsNeg=0; 398 IsRem=0; 399 IsBra=1; 400 401 402 403 IsMulDlvExist=IsMulDlvExist1; 404 TopNumber=TopNumber1; 405 BaseNumber=BaseNumber1; 406 IsRem=IsRem1; 407 IsBra=IsBra1; 408 } 409 public static void SetValue1(int IMDE) 410 { 411 IsMulDlvExist=IMDE; 412 } 413 public static void SetValue2(int Rem) 414 { 415 IsRem=Rem; 416 } 417 public static void SetValue3(int Bra) 418 { 419 IsBra=Bra; 420 } 421 public static void SetValue(int TopNumber1,int BaseNumber1){ 422 IsMulDlvExist=0; 423 BaseNumber=0; 424 TopNumber=10; 425 IsNeg=0; 426 IsRem=0; 427 IsBra=1; 428 TopNumber=TopNumber1; 429 BaseNumber=BaseNumber1; 430 431 } 432 433 public static int StrToNum(String x) 434 { 435 int num=0; 436 for(int i=0;i<x.length();i++) 437 { 438 num=num*10+x.charAt(i)-48; 439 } 440 return num; 441 } 442 public static float StrToFloat(String x) 443 { 444 float num=0; 445 int doat=0; 446 int mi=-1; 447 for(int i=0;i<x.length();i++) 448 { 449 if(x.charAt(i)=='.') 450 { 451 doat=1; 452 continue; 453 } 454 if(doat==1) 455 { 456 num=(float) (num+(x.charAt(i)-48)*Math.pow(10,mi)); 457 mi--; 458 }else{ 459 num=num*10+x.charAt(i)-48; 460 } 461 } 462 return num; 463 464 } 465 public static float StrToFloat1(String x) 466 { 467 float first=0; 468 float second=0; 469 int point=0; 470 for(int i=0;i<x.length();i++) 471 { 472 if(x.charAt(i)=='/') 473 { 474 point=1; 475 continue; 476 } 477 if(point==1) 478 { 479 second=second*10+x.charAt(i)-48; 480 }else 481 { 482 first=first*10+x.charAt(i)-48; 483 } 484 } 485 return (first/second); 486 } 487 static int ma() 488 { 489 int OutChoose = 0; 490 int truenum = 0; 491 int choose; 492 boolean flag = true; 493 int range = 0; 494 495 //IsMulDlvExist=1; 496 //BaseNumber=0; 497 //TopNumber=10; 498 //IsNeg=0; 499 //IsRem=0; 500 //IsBra=0; 501 502 503 /*cout << " 欢迎来到四则运算答题系统！" << endl; 504 cout << "说明： 初级只有加减法无括号无负数无余数（默认数值范围0-5） 中级有乘除有括号无负数无余数（默认范围0-20） 高级有乘除有括号有负数有余数（默认范围0-100）" << endl; 505 while (flag) 506 { 507 cout << "现在有初级，中级，高级，三种关卡，你要挑战哪一关？" << endl; 508 cout << "1.初级 2.中级 3.高级 请选择："; 509 cin >> choose; 510 switch (choose) 511 { 512 case 1: 513 { 514 cout << "是否打印试卷？0、否 1、是 请选择 ： "; 515 cin >> OutChoose; 516 cout << "是否需要数值重设范围？0、否 1、是 请选择 ： "; 517 cin >> range; 518 IsMulDlvExist = 0; 519 BaseNumber = 0; 520 TopNumber = 5; 521 if (range == 1){ 522 cout << "请输入下限（正数）："; 523 cin >> BaseNumber; 524 cout << "请输入上限（正数）："; 525 cin >> TopNumber; 526 } 527 IsNeg = 1; 528 IsRem = 1; 529 IsBra = 1; 530 flag = false; 531 break; 532 } 533 case 2: 534 { 535 cout << "是否打印试卷？0、否 1、是 请选择 ： "; 536 cin >> OutChoose; 537 cout << "是否需要数值重设范围？0、否 1、是 请选择 ： "; 538 cin >> range; 539 IsMulDlvExist = 1; 540 BaseNumber = 0; 541 TopNumber = 20; 542 if (range == 1){ 543 cout << "请输入下限（正数）："; 544 cin >> BaseNumber; 545 cout << "请输入上限（正数）："; 546 cin >> TopNumber; 547 } 548 IsNeg = 1; 549 IsRem = 1; 550 IsBra = 0; 551 flag = false; 552 break; 553 } 554 case 3: 555 { 556 cout << "是否打印试卷？0、否 1、是 请选择 ： "; 557 cin >> OutChoose; 558 cout << "是否需要数值重设范围？0、否 1、是 请选择 ： "; 559 cin >> range; 560 IsMulDlvExist = 1; 561 BaseNumber = 0; 562 TopNumber = 100; 563 if (range == 1){ 564 cout << "请输入下限（正数）："; 565 cin >> BaseNumber; 566 cout << "请输入上限（正数）："; 567 cin >> TopNumber; 568 } 569 IsNeg = 0; 570 IsRem = 0; 571 IsBra = 0; 572 flag = false; 573 break; 574 } 575 default: 576 { 577 cout << "输入有误，请重新选择：" << endl; 578 flag = true; 579 break; 580 } 581 } 582 583 } 584 */ 585 586 587 //float sum = 0; 588 for (int i = 0; i < 30; i++) 589 { 590 lastOp = '+'; 591 IsRep = 0; 592 NumberAmount(); 593 if (IsBra == 0) 594 { 595 AddLbracket(); 596 AddRbracket(); 597 } 598 CreateNumber(); 599 Result[i] = EvaluateExpression(); 600 while (Repeat(i) == 1 || IsRep == 1 || (IsNeg == 1 && (Result[i] < 0 || Result[i] == -0)) || (IsRem == 1 && ((int)(Result[i]*10000))%10000!=0)) 601 { 602 603 IsRep = 0; 604 lastOp = '+'; 605 formula=""; 606 NumberAmount(); 607 if (IsBra == 0) 608 { 609 AddLbracket(); 610 AddRbracket(); 611 } 612 CreateNumber(); 613 Result[i] = EvaluateExpression(); 614 } 615 buffer[i]=formula; 616 formula=""; 617 } 618 619 return 0; 620 } 621 public static float css(int number){ 622 return Result[number]; 623 } 624 public static String cs(int number){ 625 return buffer[number]; 626 } 627 public static void main() 628 { 629 int a; 630 a=ma(); 631 for (int i = 0; i < 30; i++) 632 { 633 System.out.println(buffer[i]+Result[i]); 634 } 635 636 } 637 }
结果截图：
