null created by smakar20 - https://repl.it/JsoE/0

JsoE-0.js

/*Given an array of numbers, replace each number with the product of all the numbers in the array except the number itself *without* using division.*/

//method 1
/*(function(inp){
  if(inp.length <= 0) return "not a valid input"
  let out = []
  for(var i = 0; i < inp.length; i++){
    let prod1 = 1;
    let prod2 = 1;
    for(var j = 0; j < i; j++){
      prod1 *= inp[j];
    }
    console.log("prod1: ", prod1)
    if(i != inp.length - 1){
      for(var k = i+1; k < inp.length; k++){
        prod2 *= inp[k];
      }
      console.log("prod2: ", prod2);
    }
    out.push(prod1 * prod2);
  }
  return out;
}([1,2,3]))*/

//method2
(function(inp){
  if(inp.length <= 0) return "not a valid input"
  
  let out = []
  let prev = 1
  let prod1 = 1
  
  for(var i = 0; i < inp.length; i++){
    let prod2 = 1
    prod1 *= prev
    prev = inp[i]

    if(i != inp.length - 1){
      for(var k = i+1; k < inp.length; k++){
        prod2 *= inp[k]
      }
    }
    out.push(prod1 * prod2)
  }
  return out;
}([2,3,4]))