diff --git "a/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\346\235\250\344\270\260\350\261\252/\344\272\244\346\215\242.java" "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\346\235\250\344\270\260\350\261\252/\344\272\244\346\215\242.java"
new file mode 100644
index 0000000000000000000000000000000000000000..f3aaf7ca25d613a366da015b64cefb5f5a94f6b1
--- /dev/null
+++ "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\346\235\250\344\270\260\350\261\252/\344\272\244\346\215\242.java"
@@ -0,0 +1,63 @@
+package 东东东;
+
+import java.util.Scanner;
+
+public class 交换 {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+		int[] nums = new int[10];
+		Scanner scanner = new Scanner(System.in);
+		for (int i = 0; i < 10; i++) {
+			System.out.println("请输入数字：");
+			nums[i] = scanner.nextInt();
+		}
+		int max = nums[0];
+		int min = nums[0];
+
+		for (int i = 0; i < nums.length; i++) {
+			if (max < nums[i]) {
+				max = nums[i];
+			}
+			if (max > nums[i]) {
+				max = nums[i];
+			}}
+		System.out.println("change之前");
+for(int i=0;i<nums.length;i++) {System.out.print(nums[i]+"\t");}
+change(max,min,nums);		
+System.out.println();
+System.out.println("change之后");
+for(int i=0;i<nums.length;i++) {
+	System.out.println(nums[i]+"\t");
+	
+	
+}
+	}
+
+	private static void change(int max, int min, int[] nums) {
+		int maxIndex=0;
+		int minIndex=0;
+		int temp;
+		for(int i=0;i<nums.length;i++) {
+			if(max==nums[i]) {maxIndex=i;}
+			if(max==nums[i]) {minIndex=i;}
+			
+			
+			
+			
+		}
+	temp=nums[0];
+	nums[0]=max;
+	nums[maxIndex]=temp;
+	
+	temp=nums[nums.length-1];
+	nums[nums.length-1]=min;
+	nums[minIndex]=temp;
+	
+	
+	
+	
+	
+	}
+
+}
diff --git "a/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\346\235\250\344\270\260\350\261\252/\345\271\202.java" "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\346\235\250\344\270\260\350\261\252/\345\271\202.java"
new file mode 100644
index 0000000000000000000000000000000000000000..66b49943b9961ebe0c9b2f9cafb7104e19ebad7f
--- /dev/null
+++ "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\346\235\250\344\270\260\350\261\252/\345\271\202.java"
@@ -0,0 +1,32 @@
+package dong;
+
+import java.util.Scanner;
+
+public class 幂 {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+   Scanner scanner = new Scanner(System.in);
+   System.out.println("请输入底数");
+   int a=scanner.nextInt();
+   System.out.println("请输入幂数");
+   int b=scanner.nextInt();
+   System.out.println("结果为"+jg(a,b));
+   
+   
+   
+   
+		   
+	}
+
+	public static int jg(int a, int b) {
+        int result=1;
+        for(int i=0;i<=b;i++) {
+        	result=result*a;
+        	
+        }
+        
+		return result;
+	}
+
+}
diff --git "a/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\346\235\250\344\270\260\350\261\252/\347\253\213\346\226\271.java" "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\346\235\250\344\270\260\350\261\252/\347\253\213\346\226\271.java"
new file mode 100644
index 0000000000000000000000000000000000000000..4ea46625d3e0772f71f7b79ca80125fb2ffce75a
--- /dev/null
+++ "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\346\235\250\344\270\260\350\261\252/\347\253\213\346\226\271.java"
@@ -0,0 +1,22 @@
+import java.util.Scanner;
+
+public class 立方 {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+     Scanner scanner = new Scanner(System.in);
+     int S;
+	System.out.println("请输入X:");	
+		int X=scanner.nextInt();
+		System.out.println("请输入Y:");	
+		int Y=scanner.nextInt();
+		System.out.println("请输入Z:");	
+		int Z=scanner.nextInt();
+		S=X*X*X+Y*Y*Y+Z*Z*Z;
+		System.out.println("S="+S);
+		
+		
+		
+	}
+
+}
diff --git "a/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\346\235\250\344\270\260\350\261\252/\351\232\217\346\234\272.java" "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\346\235\250\344\270\260\350\261\252/\351\232\217\346\234\272.java"
new file mode 100644
index 0000000000000000000000000000000000000000..54e88d744eaf1a532c40dfe7c88bab2745173777
--- /dev/null
+++ "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\346\235\250\344\270\260\350\261\252/\351\232\217\346\234\272.java"
@@ -0,0 +1,26 @@
+import java.util.Random;
+import java.util.Scanner;
+
+public class 随机 {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+Scanner scanner = new Scanner(System.in);
+Random random = new Random();
+int[]num=new int[20];
+for(int i=0;i<20;i++) {
+	num[i]=random.nextInt(10)+1;
+	System.out.print("随机生成的数字："+num[i]+" ");
+}
+System.out.println();
+System.out.println("请输入0~10的一个数字");
+int a=scanner.nextInt();
+int sum=0;
+for(int i=0;i<num.length;i++) {
+	if(a==num[i]) {sum++;}
+	
+	
+}System.out.println(a+"在数组的次数"+sum);
+	}
+
+}