Java程序分析和总结.docx

package 素数;

public class 素数{

public static void main(String[]args){int i,n,k=0;

for(n=101;n200;n++){i=2;

while(in){

if(n%i==0) break;i++;}

if(i==n){

k++;

System.out.println(i+ );

}

if(k%3==0)

System.out.println();

}

System.out.println( 101-200 之间有:+k+素数);

}

}

package 水仙花数;

public class 水仙花数{

public static void main(String[]args){int n,i,j,k;

for(n=100;n1000;n++)

{

i=n/100;j=n/10%10;k=n%10;

if(i*100+j*10+k==i*i*i+j*j*j+k*k*k)System.out.println(n+ );

}

}

}

package 累加;

public class 累加{

public static void main(String[]args){int sum=0,n;

+sum);for(n=1;n=100;n++)sum+=n;

+sum);

System.out.println( 1+2+3. +100=

}

}

package 斐波那契数;

public class 斐波那契数{

public static void main(String[]args)

{

int a=0;int b=1;int c=1;

while (a+b=100)

{

c=a+b;

System.out.print(c+ );a=b;

b=c;

}

}

}

package 偶数和;

public class 偶数和{

public static void main(String[]args){int n=0,sum=0;

for(n=0;n=100;n=n+2){sum=sum+n;

}

System.out.println( 2+4+...+100= +sum);

}

}

package 九九乘法表;

public class 九九乘法表{

public static void main(String[]args){int i,j;

System.out.print(*|);for(i=1;i=9;i++){

if(i==1)

System.out.print(+i);

else

}

System.out.print( +i);

System.out.println();

System.out.println( ---|---------------- );for(i=1;i=9;i++){

System.out.print(i+ |);for(j=1;j=i;j++){

if(i*j10)

System.out.print(+i*j+);

else

}

System.out.print(i*j+ );

System.out.println();

}

}

}