Java——阶段练习（2）

import java.util.*;
public class daoxu {
public static void main(String[] args) {
  Scanner r=new Scanner(System.in);
  int []g=new int[5];
  for(int b=0;b<=4;b++) {
    int c=r.nextInt();
    g[b]=c;
  }
  for(int i=4;i>=0;i--) {
  System.out.println(g [i]);
  }
  }
}

import java.util.*;
public class daoxu2 {
  public static void main(String[] args) {
    Scanner r=new Scanner (System.in);
    String s=r.nextLine();
    char []w=new char[s.length()];
    for(int a=0;a<s.length();a++) {
      char b=s.charAt(a);
      w[a]=b;
    }
    for(int j=s.length()-1;j>=0;j--) {
      System.out.print(w[j]);
    }
  }
}

public class geshihua {public static void main(String[] args) {
  int a=586;
  double b=251111111.23;
  String c="hello";
  System.out.printf("%d",a);  
  System.out.printf("%-9.6f",b);
  System.out.printf("%s",c);                   
}
}

import java.util.*;
public class hwzf {
  public static void main(String[] args) {
  Scanner r=new Scanner(System.in);
  String a=r.nextLine();
  int i=0,n,j;
  boolean s=true;
  n=a.length();
  char b,c;
  for(j=1;j<=n/2;j++) {
  b=a.charAt(i);
  c=a.charAt(n-1-i);
  if(b==c) {
    i++;
  }
  else {
    s=false;
  } 
  }
  System.out.println(" "+s);
  }
}

public class hyk {
  public static void main(String[] args) {
    String s=("啦啦啦啦你傻了吗");
    char[]a= new char[80];
    s.getChars(0,5,a,0);
    System.out.println(a);
  }
}

public class kehou5_3 {
  public static void main(String[] args) {
    int [][]a={{5,6,3},{4,8,9,},{8,9,4}};
    for(int b=0;b<3;b++) {
      for(int c=0;c<3;c++){
      System.out.print(a[b][c]); 
    }
    System.out.println();
  }
    System.out.println("对角线之和为"+(a[0][0]+a[1][1]+a[2][2]));
}
}

public class liubianxing {
  public static void main(String[] args) {
    int a[]= {0,0,1,1,1,0,2,
          0,1,0,0,0,1,2,
          1,0,0,0,0,0,3,
          0,1,0,0,0,1,2,
          0,0,1,1,1,0,2};
    for(int b=0;b<a.length;b++) {
      if(a[b]==0) {
        System.out.print("  ");
      }
      if(a[b]==1) {
        System.out.print(" *");
      }
      if(a[b]==2) {
        System.out.println("  ");
      }
      if(a[b]==3) {
        System.out.println(" *");
      }
    }
  }
}

public class shuixianhua {public static void main(String[] args) {
  System.out.println("水仙花数有:");
  for(int a=1;a<=9;a++) {
    int z=a*100;
    for(int b=0;b<=9;b++) {
      int x=b*10;
      for(int c=0;c<=9;c++) {
        int e=z+x+c;
        if(e==(a*a*a)+(b*b*b)+(c*c*c)){
            System.out.print(e+" ");
        }
      }
    }
  }
}
}

import java.util.Random;
public class suijishu {public static void main(String [] args) {
  Random a=new Random();
  int []b=new int[100];
  for(int c=0;c<=99;c++) {
    int d=a.nextInt(6);
    b[c]=d;
  }
  for(int e=0;e<100;e++){
  System.out.println(b [e]);
  }
  System.out.println("输出每个数的概率均是"+"1/7");
}
}

public class xuanze {public static void main(String[] args) {
  int []a= {99,87,66,56,40};
  System.out.println("排序前");
  for(int w=0;w<5;w++) {
  System.out.println(" "+a[w]);
  }
  for(int c=0;c<a.length-1;c++) {
    int d=c;
    for(int e=c+1;e<a.length;e++) {
      d=a[c]>a[e]?e:c;
    int f=a[c];
    a[c]=a[d];
    a[d]=f;
    }
  }
  System.out.println("排序后");
  for(int g=0;g<6;g++) {
  System.out.println(" "+a[g]);
    }  
}
}

import java.util.*;
public class zfcdx {
  public static void main(String[] args) {
    Scanner r=new Scanner (System.in);
    String a=r.nextLine();
    System.out.println(a);
    char c=a.charAt(0);
    int i,j=0;
    if(c>=65&&c<=90) {
      for(i=0;i<a.length();i++) {
        char d=a.charAt(i);
        if(d>=65&&d<=90){
          System.out.println(d);
          j++;
        }
      }
      System.out.println("大写字母共有"+j+"项");
    }
    else {
      System.out.println("您输入的字符串无大写字母");
    }
      }
  }

import java.util.*;
public class zfxd {
  public static void main(String[] args) {
  System.out.println("请输入两个字符串");
  Scanner r=new Scanner(System.in);
    String a=r.nextLine();
    String b=r.nextLine();
    System.out.println(a.equals(b));
}
}