java蓝桥杯基础训练

1、精选优质文档-倾情为你奉上1.闰年判断package base;import java.util.Scanner;public class leap public static void main(String args)Scanner scan = new Scanner(System.in);System.out.println("请输入年份");int year=scan.nextInt();if(year%4=0 && year%100!=0)System.out.println("yes");elseif(year%400=0)

2、System.out.println("yes");elseSystem.out.println("no");2.01字串package base;public class zeroandone public static void main(String args)for(int a=0;a<2;a+)for(int b=0;b<2;b+)for(int c=0;c<2;c+)for(int d=0;d<2;d+)for(int e=0;e<2;e+)System.out.println(""+a+b+

3、c+d+e);3.字母图形package base;import java.util.Scanner;public class letters public static void main(String args) Scanner letter = new Scanner(System.in);/System.out.println("请输入");int m = letter.nextInt();int n = letter.nextInt();letter.close();for (int i = 0;i<m;i+)for(int j=0;j<n;j+)in

4、t k=0;k=Math.abs(i-j);char c=(char)(k+'A');System.out.print(c);System.out.println();4.数列特征package base;import java.util.Scanner;public class max SuppressWarnings("resource")public static void main(String args) Scanner scan = new Scanner(System.in);int k = scan.nextInt();int arr=new

5、 intk;for(int i=0;i<k;i+)int number =scan.nextInt();arri=number;int sum=0,max=arr0,min=max;for (int i=0;i<arr.length;i+)sum+=arri;if(min>arri)min=arri;if(max<arri)max=arri;System.out.println(+ max); System.out.println( + min); System.out.println(+ sum);5查找整数package base;import java.util.

6、Scanner;public class findnumber public static void main(String arg) Scanner scan = new Scanner(System.in);int n=scan.nextInt();int arr=new intn;for(int i=0;i<n;i+)int number =scan.nextInt();arri=number;int m=scan.nextInt();for(int i=0;i<n;i+)if(arri=m)System.out.println(i+1);return;System.out.

7、println("-1");6.杨辉三角形package base;import java.util.Scanner;public class yanghui public static void main(String args) Scanner scan = new Scanner(System.in);int rows = scan.nextInt();int arr = new introwsrows;for (int i = 0; i < rows; i+) for (int j = 0; j <= i; j+) if(j=0)arrij=1;else

8、if(j=i)arrij=1;elsearrij=arri-1j+arri-1j-1;System.out.print(arrij+" ");System.out.println();7特殊数package base;public class special public static void main(String args) for(int i=100;i<1000;i+)int a=i/100,b=(i%100)/10,c=i%10;if(a*a*a+b*b*b+c*c*c=i)System.out.println(i);8.回文数package base;p

9、ublic class huiwen public static void main(String args) for(int i=1;i<=9;i+)for(int j=0;j<=9;j+)System.out.println(i*1000+j*100+j*10+i);9.特殊回文数package base;import java.util.Scanner;public class specialhuiwen public static void main(String args) Scanner scan = new Scanner(System.in);int n=scan.

10、nextInt();for(int i=10000;i<i+)int a=i/10000; /万位int b=(i%10000)/1000;int c=i%1000/100;int d=i%100/10;int e=i%10;if(e=a&&d=b&&a+b+c+d+e=n)System.out.println(i);elseint a1=i/;int b1=i%/10000;int c1=i%10000/1000;int d1=i%1000/100;int e1=i%100/10;int f1=i%10;if(f1=a1&&e1=b1&a

11、mp;&d1=c1&&a1+b1+c1+d1+e1+f1=n)System.out.println(i);10。十进制转十六进制package base;import java.util.Scanner;public class turnto16 public static void main(String args) Scanner scan = new Scanner(System.in);Integer number = scan.nextInt();String lastnumber=number.toHexString(number);System.out.p

12、rintln(lastnumber);11.十六进制转十进制package base;import java.util.Scanner;public class turnto10 public static void main(String args) Scanner scan = new Scanner(System.in);String number = scan.nextLine();long lastnumber=Long.parseLong(number,16);System.out.println(lastnumber);12.数列排序package base;import jav

13、a.util.Scanner;public class list public static void main(String args) Scanner in = new Scanner(System.in); int n = in.nextInt(); int a = new intn; for (int i = 0; i < a.length; i+) ai=in.nextInt(); int temp; for (int i = 0; i < a.length; i+) temp =ai; for (int j = i; j < a.length; j+) if(ai

14、>aj) ai=ai+aj; aj=ai-aj; ai=ai-aj; for (int i = 0; i < a.length; i+) if(i=(a.length-1) System.out.print(ai); else System.out.print(ai+" "); 13.十六进制转八进制（参考）package base;import java.util.Arrays;import java.util.Scanner;public class turnto8 public static void main(String args) Scanner i

15、n=new Scanner(System.in); int n=in.nextInt(); String arr=new String11; for(int i=0;i<n;i+) String h=in.next(); StringBuffer tempB=new StringBuffer(); for(int m=0;m<h.length();m+) char numH=h.charAt(m); String b=Integer.toBinaryString(Integer.valueOf(String.valueOf(numH), 16); for(int k=b.lengt

16、h();k<4;k+) b='0'+b; tempB.append(b); StringBuffer tempO=new StringBuffer(); int zero=3-tempB.length()%3; for(int p=0;p<zero;p+) tempB=new StringBuffer("0").append(tempB); for(int m=0;m<tempB.length();m+=3) /把字符串长度转换为三的倍数添加前导0 String numB=tempB.substring(m, m+3); String o=

17、Integer.toOctalString(Integer.valueOf(String.valueOf(numB), 2); tempO.append(o); arri=tempO.toString().replaceAll("(0+)", ""); for(int i=0;i<n;i+) System.out.println(arri); 入门训练1A+B问题package base;import java.util.Scanner;public class add public static void main(String args) Sc

18、anner scan = new Scanner(System.in);int a = scan.nextInt();int b = scan.nextInt();System.out.println(a+b);2 Fibonaccipackage base;import java.util.Scanner;public class Fibonacci public static void main(String args) Scanner sc=new Scanner(System.in);int n=sc.nextInt();int arr =new int;arr1=arr2=1;for(int i=3;i<i+)arri=(arri-1+arri-2)%10007;System.out.print(arrn);3圆的面积package base;import java.util.Scanner;public class circular public static void main(String args)Scanner scan = new Scanner(System.in);int radius =scan.nextInt();dou