179.js

/** ------------------------------------------------------------------------------
 * 
 * 179. Largest Number
 * Topics: Sort
 * https://leetcode.com/problems/largest-number/description/?envType=daily-question&envId=2024-09-18
 * 
 ------------------------------------------------------------------------------ */
/**
 * @param {number[]} nums
 * @return {string}
 */
var largestNumber = function (nums) {
  const strArray = nums.map(String)

  const result = strArray
    .sort((a, b) => {
      return b + a - (a + b)
    })
    .join("")

  // 형변환보다 첫번째 자리 엣지케이스로 0을 처리하는게 좋은 방법
  // return BigInt(result).toString()

  if (result[0] === "0") return "0"

  return result
}

// console.log(largestNumber([10, 2]))
// console.log(largestNumber([3, 30, 34, 5, 9]))
console.log(largestNumber([0, 0, 0]))