apple.js

/*
Complete the function which get an input number n such that n >= 10 and n < 10000, then:

Sum all the digits of n.
Subtract the sum from n, and it is your new n.
If the new n is in the list below return the associated fruit, otherwise return back to task 1.
Example
n = 325
sum = 3+2+5 = 10
n = 325-10 = 315 (not in the list)
sum = 3+1+5 = 9
n = 315-9 = 306 (not in the list)
sum = 3+0+6 = 9
n =306-9 = 297 (not in the list)
. .
. ...until you find the first n in the list below.
*/

//Answer//

const SubtractSum = () => "apple";

//OR//

function SubtractSum(n){
let fruit = ['kiwi', 'pear', 'kiwi', 'banana', 'melon', 'banana', 'melon', 'pineapple', 'apple', 'pineapple', 'cucumber', 'pineapple', 'cucumber', 'orange', 'grape', 'orange', 'grape', 'apple', 'grape', 'cherry', 'pear', 'cherry', 'pear', 'kiwi', 'banana', 'kiwi', 'apple', 'melon', 'banana', 'melon', 'pineapple', 'melon', 'pineapple', 'cucumber', 'orange', 'apple', 'orange', 'grape', 'orange', 'grape', 'cherry', 'pear', 'cherry', 'pear', 'apple', 'pear', 'kiwi', 'banana', 'kiwi', 'banana', 'melon', 'pineapple', 'melon', 'apple', 'cucumber', 'pineapple', 'cucumber', 'orange', 'cucumber', 'orange', 'grape', 'cherry', 'apple', 'cherry', 'pear', 'cherry', 'pear', 'kiwi', 'pear', 'kiwi', 'banana', 'apple', 'banana', 'melon', 'pineapple', 'melon', 'pineapple', 'cucumber', 'pineapple', 'cucumber', 'apple', 'grape', 'orange', 'grape', 'cherry', 'grape', 'cherry', 'pear', 'cherry', 'apple', 'kiwi', 'banana', 'kiwi', 'banana', 'melon', 'banana', 'melon', 'pineapple', 'apple', 'pineapple'];
do{
n-=n.toString().split('').reduce((a, b) => +a + +b) 
}while(n>=100)
return fruit[n-1]
}