修改示例

Author: enjoyCoding666

src/main/java/com/bit/BitDemo.java

@@ -31,8 +31,8 @@ public class BitDemo {
      *       某一个数x， x & 1 可以得到 x 除以 2 的余数。也就是说，可以用 x & 1 来判断奇偶数。
      *
      */
-    public static void andDemo(int num1, int num2) {
-        int result = num1 & num2;
+    public static void andDemo() {
+        int result = 8 & 7;
         System.out.println(result);
 
     }
@@ -48,9 +48,10 @@ public static void andDemo(int num1, int num2) {
      *      结果:
      *      1111
      *
+     *      1111转化为十进制是15，也就是说 8 | 7 = 15.
      */
-    public static void orDemo(int num1, int num2) {
-        int result = num1 | num2;
+    public static void orDemo() {
+        int result = 8 | 7;
         System.out.println(result);
 
     }
@@ -59,11 +60,9 @@ public static void orDemo(int num1, int num2) {
     /**
      * 异或	a ^ b	相同为0，相异为1
      *
-     * @param num1
-     * @param num2
      */
-    public static void xorDemo(int num1, int num2) {
-        int result = num1 ^ num2;
+    public static void xorDemo() {
+        int result = 5 ^ 10;
         System.out.println(result);
 
     }
@@ -73,8 +72,8 @@ public static void xorDemo(int num1, int num2) {
      *  ~	取反	~a	0的为1，1的为0
      *
      */
-    public static void reverseDemo(int num) {
-        int result = ~num;
+    public static void reverseDemo() {
+        int result = ~5;
         System.out.println(result);
     }
 
@@ -83,8 +82,8 @@ public static void reverseDemo(int num) {
      * 左移一位，相当于乘以2。
      *
      */
-    public static void leftDemo(int num) {
-        int result = num << 1;
+    public static void leftDemo() {
+        int result = 7 << 1;
         System.out.println(result);
     }
 
@@ -93,8 +92,8 @@ public static void leftDemo(int num) {
      * 右移一位，相当于除以2。
      *
      */
-    public static void rightDemo(int num) {
-        int result = num >> 1;
+    public static void rightDemo() {
+        int result = 8 >> 1;
         System.out.println(result);
     }
 

src/main/java/com/test/Test.java

@@ -1,21 +1,29 @@
 package com.test;
 
+import com.alibaba.druid.sql.visitor.functions.Char;
 import lombok.extern.java.Log;
 import lombok.extern.log4j.Log4j;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Scanner;
 
-/**
- * Created by lenovo on  三月
- */
 @Log
 public class Test {
     public static void main(String[] args) {
-        List<String> list=new ArrayList<String>();
-        list.add("17875421001");
-        list.add("12372221098");
-        log.info("test");
-
+        Scanner in=new Scanner(System.in);
+        StringBuilder stars=new StringBuilder();
+        StringBuilder sb=new StringBuilder();
+        while (in.hasNext()) {
+            String input=in.next();
+            for(char c:input.toCharArray()){
+                if ('*'==c){
+                    stars.append("*");
+                }else {
+                    sb.append(c);
+                }
+            }
+        }
+        System.out.println(stars.toString()+sb.toString());
     }
 }

src/main/java/com/test/Test2.java

@@ -0,0 +1,20 @@
+package com.test;
+
+
+import java.util.Scanner;
+
+public class Test2 {
+	public static void main(String[] args) {
+		Scanner sc = new Scanner(System.in);
+		int n = sc.nextInt();
+		int ans = 0;
+		int x;
+		for(int i = 0; i < n; i++){
+			for(int j = 0; j < n; j++){
+				x = sc.nextInt();
+
+			}
+		}
+		System.out.println(ans);
+	}
+}

src/main/java/com/test/Test3.java

@@ -0,0 +1,9 @@
+package com.test;
+
+/**
+ * @Author: EnjoyCoding
+ * @Date: 2020\6\7 0007 15:19
+ * @Description:
+ */
+public class Test3 {
+}

src/main/java/test/com/bit/BitDemoTest.java

@@ -30,7 +30,7 @@ public void after() throws Exception {
 @Test
 public void testAndDemo() throws Exception { 
 //TODO: Test goes here...
-    BitDemo.andDemo(8, 7);
+    BitDemo.andDemo();
 } 
 
 /** 
@@ -41,7 +41,7 @@ public void testAndDemo() throws Exception {
 @Test
 public void testOrDemo() throws Exception { 
 //TODO: Test goes here...
-    BitDemo.orDemo(8, 7);
+    BitDemo.orDemo();
 } 
 
 /** 
@@ -52,7 +52,7 @@ public void testOrDemo() throws Exception {
 @Test
 public void testXorDemo() throws Exception { 
 //TODO: Test goes here...
-    BitDemo.xorDemo(8, 7);
+    BitDemo.xorDemo();
 } 
 
 /** 
@@ -63,7 +63,7 @@ public void testXorDemo() throws Exception {
 @Test
 public void testReverseDemo() throws Exception { 
 //TODO: Test goes here...
-    BitDemo.reverseDemo(5);
+    BitDemo.reverseDemo();
 } 
 
 /** 
@@ -74,7 +74,7 @@ public void testReverseDemo() throws Exception {
 @Test
 public void testLeftDemo() throws Exception { 
 //TODO: Test goes here...
-    BitDemo.leftDemo(10);
+    BitDemo.leftDemo();
 } 
 
 /** 
@@ -85,7 +85,7 @@ public void testLeftDemo() throws Exception {
 @Test
 public void testRightDemo() throws Exception { 
 //TODO: Test goes here...
-    BitDemo.rightDemo(20);
+    BitDemo.rightDemo();
 }