sum-strings-challenge.js

/* 
  You are given 2 numbers as strings, and you need to sum them assuming that you can't simply parse them as integers
  cause the numbers may be too big to be stored as an integer
  Return the sum as a string
*/ 
function sumStrings(str1, str2) {
  // Your code here
}

function test(str1, str2, solution) {
  const res = sumStrings(str1, str2)
  const isCorrect = res === solution ? "Correct" : "Incorrect"
  console.log(`${str1} + ${str2} = ${res} \t=>\t${isCorrect}, expected ${solution}`)
}

test('1', '1', '2')
test('9', '1', '10')
test('999', '2', '1001')
test('10001', '1', '10002')
test('1', '10001', '10002')
test('10009', '10001', '20010')
test('299', '12', '311')