1. package day0901;
5. import java.util.Arrays;
7. import java.util.Scanner;
11. public class Test1 {
13. public static void main(String[] args) {
15. System.out.print("输入字符串");
17. String s = new Scanner(System.in).nextLine();
21. System.out.print("输入子串");
23. String find = new Scanner(System.in).nextLine();
27. int[] a = find(s,find);
29. System.out.println(Arrays.toString(a));
31. }
35. private static int[] find(String s, String find) {
37. int[] a = new int[s.length()];
39. int index = 0;
41. int i = 0;
43. while (true)
45. {
47. index = s.indexOf(find,index);
49. if(index == -1) break;
51. a[i++] = index;
53. index++;
55. }
57. return Arrays.copyOf(a,i);
59. }
61. }

package day0901;

 

import java.util.Arrays;

import java.util.Scanner;

 

public class Test1 {

    public static void main(String[] args) {

        System.out.print("输入字符串");

        String s = new Scanner(System.in).nextLine();

 

        System.out.print("输入子串");

        String find = new Scanner(System.in).nextLine();

 

        int[] a = find(s,find);

        System.out.println(Arrays.toString(a));

    }

 

    private static int[] find(String s, String find) {

        int[] a = new int[s.length()];

        int index = 0;

        int i = 0;

        while (true)

        {

            index = s.indexOf(find,index);

            if(index == -1) break;

            a[i++] = index;

            index++;

        }

        return Arrays.copyOf(a,i);

    }

}

1. package day0804;
5. import java.util.Random;
9. public class GuessLetterGame extends GuessGame {
11. @Override
13. public String suiji() {
15. StringBuilder sb = new StringBuilder("ABCDEFGHIJKLMNOPQRSTUVWXYZ");
17. for (int i=0;i<5;i++)
19. {
21. int j = i + new Random().nextInt(26-i);
23. char t = sb.charAt(i);
25. sb.setCharAt(i,sb.charAt(j));
27. sb.setCharAt(j,t);
29. }
31. sb.delete(5,26);
33. return sb.toString();
35. }
39. @Override
41. public void tishi() {
43. System.out.println("已经产生了5个不同的大写字母");
45. }
49. @Override
51. public String bijiao(String result, String input) {
53. int a = 0;
55. int b = 0;
57. for(int i=0;i<5;i++)
59. {
61. for (int j=0;j<5;j++)
63. {
65. if(result.charAt(i) == input.charAt(j))
67. {
69. if(i==j) a++;
71. else b++;
73. }
75. }
77. }
79. return a+"A"+b+"B";
81. }
85. @Override
87. public boolean caidui(String result) {
89. return result.equals("5A0B");
91. }
93. }

package day0804;

 

import java.util.Random;

 

public class GuessLetterGame extends GuessGame {

    @Override

    public String suiji() {

        StringBuilder sb = new StringBuilder("ABCDEFGHIJKLMNOPQRSTUVWXYZ");

        for (int i=0;i<5;i++)

        {

            int j = i + new Random().nextInt(26-i);

            char t = sb.charAt(i);

            sb.setCharAt(i,sb.charAt(j));

            sb.setCharAt(j,t);

        }

        sb.delete(5,26);

        return sb.toString();

    }

 

    @Override

    public void tishi() {

        System.out.println("已经产生了5个不同的大写字母");

    }

 

    @Override

    public String bijiao(String result, String input) {

        int a = 0;

        int b = 0;

        for(int i=0;i<5;i++)

        {

            for (int j=0;j<5;j++)

            {

                if(result.charAt(i) == input.charAt(j))

                {

                    if(i==j) a++;

                    else b++;

                }

            }

        }

        return a+"A"+b+"B";

    }

 

    @Override

    public boolean caidui(String result) {

        return result.equals("5A0B");

    }

}

1. package day0903;
5. import java.util.Random;
9. public class Soldier {
11. public int id;
13. public int blood = 100;
17. //静态士兵计数变量
19. static int counts = 1;
23. public Soldier(){
25. this.id = Soldier.counts;
27. ++counts;
29. System.out.println("构造方法");
31. }
35. public void go()
37. {
39. System.out.println(id+"号 士兵前进");
41. }
45. public void ac()
47. {
49. if(blood == 0){
51. System.out.println(id+"号士兵已经阵亡");
53. return;
55. }
57. System.out.println(id+"号 士兵进攻");
59. int d = new Random().nextInt(10);
61. this.blood -= d;
63. if(this.blood < 0 ) this.blood = 0;
65. System.out.println("血量:"+blood);
67. if (blood == 0) System.out.println(id+"号 士兵阵亡");
69. }
71. }

package day0903;

 

import java.util.Random;

 

public class Soldier {

    public int id;

    public int blood = 100;

 

    //静态士兵计数变量

    static int counts = 1;

 

    public Soldier(){

        this.id = Soldier.counts;

        ++counts;

        System.out.println("构造方法");

    }

 

    public void go()

    {

        System.out.println(id+"号 士兵前进");

    }

 

    public void ac()

    {

        if(blood == 0){

            System.out.println(id+"号士兵已经阵亡");

            return;

        }

        System.out.println(id+"号 士兵进攻");

        int d = new Random().nextInt(10);

        this.blood -= d;

        if(this.blood < 0 ) this.blood = 0;

        System.out.println("血量:"+blood);

        if (blood == 0) System.out.println(id+"号 士兵阵亡");

    }

}

1. class A {
3. int v1 = 1;
5. static int v2 = 2;
7. static {
9. }
11. public A() {
13. }
15. }
19. class B extends A {
21. int v3 = 3;
23. static int v4 = 4;
25. static {
27. }
29. public B() {
31. }
33. }
37. new B()

class A {

   int v1 = 1;

   static int v2 = 2;

   static {

}

public A() {

}

}

 

class B extends A {

   int v3 = 3;

   static int v4 = 4;

   static {

}

public B() {

}

}

 

new B()