Question

1,-3,5,-7,9.......-19 write a java program

Answer 1

public class series

{

public static void main(String args[])

{

int i,t=1;

for(i=1;i<=19;i=i+2)

{

System.out.print(i*t+",");

t=t*(-1);

}

}

}

Alternative way....

public class series

{

public static void main(String args[])

{

int i,x=1;

for(i=1;i<=10;i++)

{

if(i%2==1)

System.out.print(x+",");

else

System.out.print(x*(-1)+",");

}

}

}