diff --git a/PSP2088/MathExam_v1.java b/PSP2088/MathExam_v1.java
new file mode 100644
index 0000000000000000000000000000000000000000..3ed36453d91f0895b7b6f63550bee37b9fd12d7f
--- /dev/null
+++ b/PSP2088/MathExam_v1.java
@@ -0,0 +1,46 @@
+import java.util.Scanner;
+import java.io.DataOutputStream;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.PrintStream; 
+import java.util.Random;
+
+public class MathExam_v1 {
+	public static void main(String args[]) throws IOException{
+		int num1;
+		int num2;
+		int flag;
+		int result;
+		int n;
+		File file = new File("d:/out.txt");
+		DataOutputStream out = new DataOutputStream(new FileOutputStream(file));
+		String sign;
+		Scanner Scanner = new Scanner(System.in);
+		Random rand = new Random();
+		System.out.println("请输入想要出题的数目：");
+		n = Scanner.nextInt();//输入出题道数
+			for(int i=0;i<n;i++){
+				num1 = rand.nextInt(20+1)+1;     //生成两个数字来运算
+				num2 = rand.nextInt(20+1)+1;
+				flag = rand.nextInt(1+1)+1;
+				if(flag==1){
+					sign = "+";
+				} else{
+					sign = "-";
+				}
+				System.out.println(num1+sign+num2+"=");
+				String str1 = (num1+sign+num2+"=");
+				out.writeUTF(str1);
+				if(sign=="+"){
+					result = num1+num2;
+				} else{
+					result = num1-num2;
+				}
+				String str = ("("+(i+1)+")"+num1+sign+num2+"="+result);
+				out.writeUTF(str);
+			}
+				
+	}
+}
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diff --git a/PSP2088/MathExam_v2.java b/PSP2088/MathExam_v2.java
new file mode 100644
index 0000000000000000000000000000000000000000..6f01d982f7cb05da93410243a75ec623ebe7c0a1
--- /dev/null
+++ b/PSP2088/MathExam_v2.java
@@ -0,0 +1,61 @@
+import java.util.Scanner;
+import java.io.DataOutputStream;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.PrintStream; 
+import java.util.Random;
+
+public class MathExam_v2 {
+	public static void main(String args[]) throws IOException{
+		int num1;
+		int num2;
+		int flag;
+		int result=0;
+		int n;
+		File file = new File("d:/out.txt");
+		DataOutputStream out = new DataOutputStream(new FileOutputStream(file));
+		String sign= null;
+		Scanner Scanner = new Scanner(System.in);
+		Random rand = new Random();
+		System.out.println("请输入想要出题的数目：");
+		n = Scanner.nextInt();//输入出题道数
+			for(int i=0;i<n;i++){
+				num1 = rand.nextInt(20+1)+1;     //生成两个数字来运算
+				num2 = rand.nextInt(20+1)+1;
+				flag = rand.nextInt(3+1)+1;
+				if(flag==1){
+					sign = "+";
+				} else if(flag==2){
+					sign = "-";
+				} else if(flag==3){
+					sign = "*";
+				} else if (flag==4){
+					sign = "/";
+				}
+				System.out.println(num1+sign+num2+"=");
+				String str1 = (num1+sign+num2+"=");
+				out.writeUTF(str1);
+				if(sign=="+"){
+					result = num1+num2;
+				} else if(sign=="-"){
+					result = num1-num2;
+				} else if(sign=="*"){
+					result = num1*num2;
+				} else if(sign=="/"){
+						result = num1/num2;
+					
+				}
+				if(sign=="/"){
+					String str = ("("+(i+1)+")"+num1+sign+num2+"="+result+"...."+(num1%num2)+"   ");
+					out.writeUTF(str);
+				} else{
+					String str = ("("+(i+1)+")"+num1+sign+num2+"="+result+"   ");
+					out.writeUTF(str);
+				}
+				
+				
+			}
+				
+	}
\ No newline at end of file