warmUp5.js

// 1) Write a function named greaterNum that:
// - takes 2 arguments, both numbers.
// - returns whichever number is the greater (higher) number.
// ex greaterNum(5, 10) => "The greater number of 5 and 10 is 10."
function greaterNum(num1,num2){
	if ( num1 > num2) {
		return 'The greater number of ' + num1 +' and '+num2 +' is '+num1 ;
	} 
 return 'The greater number of ' + num1 +' and '+num2 +' is '+num2 ;
}

// 2) Write a function named isEven using  for loop that
// -  iterate from x to y.
// -  return array contain the even values,
//  ex:  isEven(1,10) => [2,4,6,8,10]

function isEven(x, y) {
 for (var i=0 ;i<y ; i++)
 	if()

// }
//3) write a function named sum that
// - Use a while loop to add up the numbers from x to y.
// ex sum(1,5) => 15

function sum(x,y) { 
      var total = 0;
      var i=1 
   while (i <= y) { 
       total = total + i; 
        i++; 
 } 
 return total; 
 }

//4) Write a function named factorial that
// -  Use Recursion to calculate the factorial of a number
// -  the factorial of a non-negative integer n, denoted by n!, is the product of all positive integers less than or equal to n
// - 5! = 5*4*3*2*1 = 120
// ex : factorial(5) => 120
 function factorial(n) { 
      var total = 1;
      var i=0 
 while (i <= n) { 
      total = total * i; 
       i++; 
 } 
 return total; 
 }

//5) write a function named decimals
//- the function will format a number up to specified decimal places
//- the function will return a string
//- if the parameters not a number return false
// ex :
//      decimals(2100, 'a') ==> false
//      decimals('a', 5) ==> false
//      decimals(2.100212, 2) ==> '2.10'
//      decimals(2.100212, 3) ==> '2.100'
//      decimals(2100, 2) ==> '2100.00'
//