const lunarSum = (num1, num2) => {
const numStr1 = String(num1);
const numStr2 = String(num2);
let result = 0;
for (let i = 0; i < numStr1.length; i++) {
let temp = Math.max(numStr1[i], numStr2[i]);
result = (result * 10) + temp;
};
return result;
};
const num1 = 9762;
const num2 = 3485;
console.log(lunarSum(num1, num2));
/*
run:
9785
*/