ShiYong.java package rjgz; import java.io.FileWriter; import java.io.IOException; import java.util.Scanner; public class ShiYong { public static void main(String[] args) { Scanner scanner=new Scanner(System.in); System.out.print("请选择参数范围-> "); int fanWei=scanner.nextInt(); int fanWei2=scanner.nextInt(); Exercise exercise=new Exercise(); for (int i = 0; i < 50; i++) { BinaryOperation b=new BinaryOperation(fanWei2,fanWei); while (!exercise.Check(b)&&b.getValue()<0&&b.getValue()>100){ b=new BinaryOperation(fanWei2,fanWei); } exercise.list.add(b); } exercise.showList(); // 将数据转换为CSV格式的字符串 StringBuilder csvData = new StringBuilder(); for(BinaryOperation objB : exercise.list) { csvData.append(objB.getLeft_operand()).append(objB.getOperator()) .append(objB.getRight_operand()).append(objB.getOperator2()) .append(objB.getThird_operand()).append("=").append(",") .append(objB.getValue()).append("\n"); } // 写入CSV文件 String csvFile = "data.csv"; try (FileWriter writer = new FileWriter(csvFile)) { writer.write(csvData.toString()); System.out.println("Data saved to " + csvFile); } catch (IOException e) { e.printStackTrace(); } } } BinaryOperation.java package rjgz; import java.util.Random; public class BinaryOperation { private int Upper = 100; private int Lower = 0; private int Right_operand = 0; public int getUpper() { return Upper; } public void setUpper(int upper) { Upper = upper; } public int getLower() { return Lower; } public void setLower(int lower) { Lower = lower; } public int getRight_operand() { return Right_operand; } public void setRight_operand(int right_operand) { Right_operand = right_operand; } public int getLeft_operand() { return Left_operand; } public void setLeft_operand(int left_operand) { Left_operand = left_operand; } public int getThird_operand() { return Third_operand; } public void setThird_operand(int third_operand) { Third_operand = third_operand; } public int getValue() { return Value; } public void setValue(int value) { Value = value; } public char getOperator() { return Operator; } public void setOperator(char operator) { Operator = operator; } public char getOperator2() { return Operator2; } public void setOperator2(char operator2) { Operator2 = operator2; } private int Left_operand = 0; private int Third_operand = 0; private int Value = 100; private char Operator = '+'; private char Operator2 = '+'; public int calculate(){ if(Operator=='+'&&Operator2=='+'){ Value=Right_operand+Left_operand+Third_operand; }else if (Operator=='-'&&Operator2=='+'){ Value=Left_operand-Right_operand+Third_operand; }else if(Operator=='+'&&Operator2=='-'){ Value=Left_operand+Right_operand-Third_operand; }else if(Operator=='-'&&Operator2=='-'){ Value=Left_operand-Right_operand-Third_operand; } return Value; } BinaryOperation(int upper,int lower){ Random random = new Random(); this.Upper=upper; this.Lower=lower; Left_operand=random.nextInt(upper - lower + 1) + lower; Right_operand=random.nextInt(upper - lower + 1) + lower; Third_operand=random.nextInt(upper - lower + 1) + lower; int h=random.nextInt(2); int h2=random.nextInt(2); if (h==1)Operator='+'; else Operator='-'; if (h2==1)Operator2='+'; else Operator2='-'; calculate(); } @Override public String toString() { return "BinaryOperation{" + "Right_operand=" + Right_operand + ", Left_operand=" + Left_operand + ", Value=" + Value + ", Operator=" + Operator + ", Operator2=" + Operator2 + '}'; } public Boolean equals2(BinaryOperation two){ return this.toString().equals(two.toString()); } } Exercise.java package rjgz; import java.util.ArrayList; import java.util.List; public class Exercise { public List<BinaryOperation> list=new ArrayList<>(); public void showList(){ int i=0; for (BinaryOperation b : list) { System.out.print(b.getLeft_operand()+" "+b.getOperator()+" "+b.getRight_operand()+" "+b.getOperator2()+" "+b.getThird_operand()+" = "); i++; if (i%5==0){System.out.println();} } } public Boolean Check(BinaryOperation b){ for (BinaryOperation bb : list) { if (bb.equals2(b)) { return false; }} return true; } }
运算结果如下
标签:return,int,BinaryOperation,存入,Operator,算数,operand,CSV,public From: https://www.cnblogs.com/wllovelmbforever/p/17801037.html