/*
Description:
The depth of an integer n is defined to be how many multiples of n it is necessary to compute before all 10 digits have appeared at least once in some multiple.

example:

let see n=42

Multiple         value         digits     comment
42*1              42            2,4 
42*2              84             8         4 existed
42*3              126           1,6        2 existed
42*4              168            -         all existed
42*5              210            0         2,1 existed
42*6              252            5         2 existed
42*7              294            9         2,4 existed
42*8              336            3         6 existed 
42*9              378            7         3,8 existed
Looking at the above table under digits column you can find all the digits from 0 to 9, Hence it required 9 multiples of 42 to get all the digits. So the depth of 42 is 9. Write a function named computeDepth which computes the depth of its integer argument.Only positive numbers greater than zero will be passed as an input.
*/

function computeDepth(x) {
  let arr = [];
  for (let i = 1; ; i++) {
    arr.push((x * i).toString().split(``));
    if ([...new Set([].concat(...arr))].length === 10) return i;
  }
  return "too easy";
}
