diff --git "a/\346\226\271\346\263\225\345\244\215\344\271\2402/\346\226\271\350\215\243\346\230\237/Demo01.java" "b/\346\226\271\346\263\225\345\244\215\344\271\2402/\346\226\271\350\215\243\346\230\237/Demo01.java"
new file mode 100644
index 0000000000000000000000000000000000000000..6dd9cbd50c8ffc3df5bd5f36b6c86ac76ed565a4
--- /dev/null
+++ "b/\346\226\271\346\263\225\345\244\215\344\271\2402/\346\226\271\350\215\243\346\230\237/Demo01.java"
@@ -0,0 +1,55 @@
+package fang;
+
+import java.util.Scanner;
+
+public class Demo01 {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+		int[] arr = { 90, 70, 65, 20, 10 };
+		int[] newarr = new int[arr.length + 1];
+		int index = -1;
+		print(arr);
+		System.out.println();
+		Scanner sc = new Scanner(System.in);
+		int num;
+		System.out.println("请输入一个数字");
+		num = sc.nextInt();
+		for (int i = 0; i < arr.length; i++) {
+			if (num > arr[i]) {
+				index = i;
+				break;
+			}
+		} // 找到索引
+		if (index != -1) {
+			for (int i = 0; i < newarr.length; i++) {
+				if (index > i) {
+					newarr[i] = arr[i];
+				}
+				if (index == i) {
+					newarr[i] = num;
+				}
+				if (index < i) {
+					newarr[i] = arr[i - 1];
+				}
+			}
+		} else {// 等于-1 每个数字都比他大
+			for (int i = 0; i < newarr.length; i++) {
+				if (i == newarr.length - 1) {
+					newarr[i] = num;
+				} else {
+					newarr[i] = arr[i];
+				}
+			}
+		}
+		print(newarr);
+
+	}
+
+	public static void print(int[] a) {
+		for (int i = 0; i < a.length; i++) {
+			System.out.print(a[i] + ",");
+		}
+	}
+
+}
diff --git "a/\346\226\271\346\263\225\345\244\215\344\271\2402/\346\226\271\350\215\243\346\230\237/Domo02.java" "b/\346\226\271\346\263\225\345\244\215\344\271\2402/\346\226\271\350\215\243\346\230\237/Domo02.java"
new file mode 100644
index 0000000000000000000000000000000000000000..a6f8dafc83903252ac77055d24818bab55a72528
--- /dev/null
+++ "b/\346\226\271\346\263\225\345\244\215\344\271\2402/\346\226\271\350\215\243\346\230\237/Domo02.java"
@@ -0,0 +1,18 @@
+package fang;
+
+public class Domo02 {
+
+	public static void main(String[] args) {
+		int a =10;
+		int b =20;
+		System.out.println("a是"+a);
+		System.out.println("b是"+b);
+		int temp=0;
+		temp=a;
+		a=b;
+		b=temp;
+		System.out.println("a是"+a);
+		System.out.println("b是"+b);
+	}
+
+}
diff --git "a/\346\226\271\346\263\225\345\244\215\344\271\2402/\346\226\271\350\215\243\346\230\237/Domo03.java" "b/\346\226\271\346\263\225\345\244\215\344\271\2402/\346\226\271\350\215\243\346\230\237/Domo03.java"
new file mode 100644
index 0000000000000000000000000000000000000000..3d03b170a2556c2f5a88a677c9b6d595bee23f17
--- /dev/null
+++ "b/\346\226\271\346\263\225\345\244\215\344\271\2402/\346\226\271\350\215\243\346\230\237/Domo03.java"
@@ -0,0 +1,25 @@
+package fang;
+
+public class Domo03 {
+
+	public static void main(String[] args) {
+//		瀹氫箟涓�涓柟娉曪紝鐢ㄦ潵瀹炵幇濡備笅鍔熻兘锛�
+//		鈥�	宸茬煡涓�涓暟缁� arr = {19, 28, 37, 46, 50}; 鐢ㄧ▼搴忓疄鐜版妸鏁扮粍涓殑鍏冪礌鍊间氦鎹紝
+
+//		鈥�	浜ゆ崲鍚庣殑鏁扮粍 arr = {50, 46, 37, 28, 19}; 骞跺湪鎺у埗鍙拌緭鍑轰氦鎹㈠悗鐨勬暟缁勫厓绱�
+		int [] arr={19, 28, 37, 46, 50};
+		int temp=0;
+		temp=arr[0];
+		arr[0]=arr[4];
+		arr[4]=temp;
+		temp=arr[3];	
+		arr[3]=arr[1];
+		arr[1]=temp;
+		print(arr);
+}
+	public static void print(int[] a) {
+		for (int i = 0; i < a.length; i++) {
+			System.out.print(a[i] + ",");
+		}
+	}
+}
\ No newline at end of file
diff --git "a/\346\226\271\346\263\225\345\244\215\344\271\2402/\346\226\271\350\215\243\346\230\237/Domo04.java" "b/\346\226\271\346\263\225\345\244\215\344\271\2402/\346\226\271\350\215\243\346\230\237/Domo04.java"
new file mode 100644
index 0000000000000000000000000000000000000000..1e9e2aeeab4ee69075d0efeb573c982af3fb575b
--- /dev/null
+++ "b/\346\226\271\346\263\225\345\244\215\344\271\2402/\346\226\271\350\215\243\346\230\237/Domo04.java"
@@ -0,0 +1,25 @@
+package fang;
+
+public class Domo04 {
+
+	public static void main(String[] args) {
+		int [] array = {50,80,64,55,6};
+		int temp=-1;
+		for (int i = 0; i < array.length-1; i++) {
+			for (int j = 0; j < array.length-1-i; j++) {
+				if (array[j]<array[j+1]) {
+					temp=array[j+1];
+					array[j+1]=array[j];
+					array[j]=temp;
+				}
+			}
+		}
+		print(array);
+	}
+	
+	public static void print(int[] a) {
+		for (int i = 0; i < a.length; i++) {
+			System.out.print(a[i] + ",");
+		}
+	}
+}
diff --git "a/\346\226\271\346\263\225\345\244\215\344\271\2402/\346\226\271\350\215\243\346\230\237/Domo05.java" "b/\346\226\271\346\263\225\345\244\215\344\271\2402/\346\226\271\350\215\243\346\230\237/Domo05.java"
new file mode 100644
index 0000000000000000000000000000000000000000..42984d83c500ac6966bbd5277105871eef595cd3
--- /dev/null
+++ "b/\346\226\271\346\263\225\345\244\215\344\271\2402/\346\226\271\350\215\243\346\230\237/Domo05.java"
@@ -0,0 +1,28 @@
+package fang;
+
+import java.util.Random;
+
+public class Domo05 {
+
+	public static void main(String[] args) {
+		Random ra=new Random();
+		int [] a=new int[3];
+
+		int [] b=new int[4];
+		for (int i = 0; i < a.length; i++) {
+			a[i]=ra.nextInt(10);
+		}
+		for (int i = 0; i < b.length; i++) {
+			b[i]=ra.nextInt(10);
+		}
+		print(a);
+		System.out.print(" ");
+		print(b);
+	}
+	public static void print(int[] a) {
+		for (int i = 0; i < a.length; i++) {
+			System.out.print(a[i] );
+		}
+	}
+
+}
diff --git "a/\346\226\271\346\263\225\345\244\215\344\271\2402/\350\224\241\344\270\234\347\224\237/dsfasfds.java" "b/\346\226\271\346\263\225\345\244\215\344\271\2402/\350\224\241\344\270\234\347\224\237/dsfasfds.java"
new file mode 100644
index 0000000000000000000000000000000000000000..934dbe3d1c2e60d4e4edab7043a48f3974124b7d
--- /dev/null
+++ "b/\346\226\271\346\263\225\345\244\215\344\271\2402/\350\224\241\344\270\234\347\224\237/dsfasfds.java"
@@ -0,0 +1,19 @@
+package dsfdsfs;
+
+public class dsfasfds {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+		int a =10;
+		int b =20;
+		int temp =0;
+		 temp =b;
+		 b =a ;
+		 a =temp;
+		 System.out.println(a);
+		 System.out.println(b);
+		
+
+	}
+
+}
diff --git "a/\346\226\271\346\263\225\345\244\215\344\271\2402/\350\224\241\344\270\234\347\224\237/fbfkhfdksbjh.java" "b/\346\226\271\346\263\225\345\244\215\344\271\2402/\350\224\241\344\270\234\347\224\237/fbfkhfdksbjh.java"
new file mode 100644
index 0000000000000000000000000000000000000000..dde67cd1849d86bd40334c0a18b436f796b38c01
--- /dev/null
+++ "b/\346\226\271\346\263\225\345\244\215\344\271\2402/\350\224\241\344\270\234\347\224\237/fbfkhfdksbjh.java"
@@ -0,0 +1,61 @@
+package dsfdsfs;
+
+import java.util.Random;
+
+public class fdasfa {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+		Random asd = new Random();
+		int abc [] = new int [3]; 
+		int abd [] = new int [4]; 
+		for (int i = 0; i < abc.length; i++) {
+			abc [i]=asd.nextInt(10);
+		}
+		for (int i = 0; i < abd.length; i++) {
+			abd [i]=asd.nextInt(10);
+		}
+		
+		ring(abc);
+		System.out.print(" ");
+		ring(abd);
+		
+		//int a [] = {19, 49, 37, 46, 38,56};
+		//ring(cing(a));
+		
+		
+
+	}
+	public static int[] cing(int[]abc){
+		for (int i = 0; i < abc.length-1; i++) {
+			for (int j = 0; j < abc.length-i-1; j++) {
+				if (abc[j]<abc[j+1]) {
+					int temp;
+					temp=abc[j+1];
+					abc[j+1]=abc[j];
+					abc[j]=temp;				
+				}
+				
+			}
+		}
+		
+		return abc;
+	}
+	
+	
+	public static void ring(int []ass) {
+		for (int i = 0; i < ass.length; i++) {
+			if (i==ass.length-1) {
+				System.out.print(ass[i]);
+			}else {
+				System.out.print(ass[i]);
+				
+			}
+			
+
+		}
+		
+		
+	}
+
+}
diff --git "a/\346\226\271\346\263\225\345\244\215\344\271\2402/\350\224\241\344\270\234\347\224\237/fdasfa.java" "b/\346\226\271\346\263\225\345\244\215\344\271\2402/\350\224\241\344\270\234\347\224\237/fdasfa.java"
new file mode 100644
index 0000000000000000000000000000000000000000..cf3122ad1bf00eb11a0d7ca1f368e0e5877c8b7c
--- /dev/null
+++ "b/\346\226\271\346\263\225\345\244\215\344\271\2402/\350\224\241\344\270\234\347\224\237/fdasfa.java"
@@ -0,0 +1,57 @@
+package dsfdsfs;
+
+import java.util.Random;
+
+public class fdasfa {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+		Random asd = new Random();
+		int abc [] = new int [6]; 
+		for (int i = 0; i < abc.length; i++) {
+			abc [i]=asd.nextInt(100)+1;
+		}
+		ring(abc);
+		System.out.println();
+		//int a [] = {19, 49, 37, 46, 38,56};
+		//ring(cing(a));
+		ring(cing(abc));
+		
+
+	}
+	public static int[] cing(int[]abc){
+		for (int i = 0; i < abc.length-1; i++) {
+			for (int j = 0; j < abc.length-i-1; j++) {
+				if (abc[j]<abc[j+1]) {
+					int temp;
+					temp=abc[j+1];
+					abc[j+1]=abc[j];
+					abc[j]=temp;
+					
+					
+					
+				}
+				
+			}
+		}
+		
+		return abc;
+	}
+	
+	
+	public static void ring(int []ass) {
+		for (int i = 0; i < ass.length; i++) {
+			if (i==ass.length-1) {
+				System.out.print(ass[i]);
+			}else {
+				System.out.print(ass[i]+",");
+				
+			}
+			
+
+		}
+		
+		
+	}
+
+}
diff --git "a/\346\226\271\346\263\225\345\244\215\344\271\2402/\350\224\241\344\270\234\347\224\237/fsadfas.java" "b/\346\226\271\346\263\225\345\244\215\344\271\2402/\350\224\241\344\270\234\347\224\237/fsadfas.java"
new file mode 100644
index 0000000000000000000000000000000000000000..08c583ea7765d4858c20f06a14e6f42b10bef23d
--- /dev/null
+++ "b/\346\226\271\346\263\225\345\244\215\344\271\2402/\350\224\241\344\270\234\347\224\237/fsadfas.java"
@@ -0,0 +1,47 @@
+package dsfdsfs;
+
+import java.util.Arrays;
+
+public class fsadfas {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+		int a [] = {19, 28, 37, 46, 60};
+		int b [] = new int [5];
+		for (int i = 0; i < b.length; i++) {
+			b[i] = a[a.length-1-i];
+		}
+		System.out.println(Arrays.toString(b));
+//		ring(k(a));
+
+	}
+	public static int[] k(int a []) {
+		int temp =0;
+		int king=0;
+		temp=a[0];
+		a[0]=a[4];
+		a[4]=temp;
+		
+		king=a[1];
+		a[1]=a[3];
+		a[3]=king;
+		
+
+		return a;
+	}
+	public static void ring(int []ass) {
+		for (int i = 0; i < ass.length; i++) {
+			if (i==ass.length-1) {
+				System.out.print(ass[i]);
+			}else {
+				System.out.print(ass[i]+",");
+				
+			}
+			
+
+		}
+		
+		
+	}
+
+}