how do I have a descending loop divisible by 3-CodePudding

d. Challenge - Print the numbers 50 - 20 in descending order, but only if the numbers are multiples of 3. (Your code should work even if you replace 50 or 20 with other numbers). */

CodePudding user response：

You Shouldn't be asking homework questions. Nevertheless here's how you do it.

var lowerlimit = 30
var upperlimit = 50
for (var i = lowerlimit;i<upperlimit;i  ){
    if (i%3==0){console.log(i)}
}

CodePudding user response：

Here just find the first number which is divisible by multiple by check each number. Once the number is found, just jump to next multiple value.

let startNumber = 50;
let endNumber = 20;

const multiple = 3;

while (startNumber >= endNumber) {
  if(startNumber % multiple === 0)  {
    console.log(startNumber);
    startNumber-=multiple;
  } else {
    startNumber--;
  } 
}

CodePudding user response：

for (let i = 50; i >= 20 ; i--) {
    if ( i % 3 === 0) console.log(i);
}