The idle Process

  function   rangeOfNumbers ( startNum ,  endNum ) {    if ( startNum <= endNum )   {      const   arrNumber  =  rangeOfNumbers ( startNum ,  endNum - 1 );      arrNumber . push ( endNum );      return   arrNumber ;   }    else  {      return  [];   }       }; console . log ( rangeOfNumbers ( 6 , 8 ));//[6,7,8] console . log ( rangeOfNumbers ( 3 , 12 )); //[ 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 ]