Write an algorithm and draw flowchart to print 30 terms in the following sequence 1,-2,3,-4,5,-6,7,-8,up to 30 terms.

/*

I don't know what language you're using, so I'll write it in javascript which is usually legible enough.

*/

console.log(buildSequence(30));

function buildSequence(maxVal){

   maxVal = Math.abs(maxVal);

   var n, list = [];

   for(n = 1; n < maxVal; n++){

       /*

        to check for odd numbers, we only need to know if the last bit

        is a 1 or 0:

       */

       if(n & 1){ // <-- note the binary &, as opposed to the logical &&

           list[list.length] = n;

       }else{

           list[list.length] = -n;

       }

   }

   return list.implode(',');

}

answer; geometric center line;