ParkDongJo

import sys

def solution(a, b):
    aBigNum, bBigNum = str(a), str(b)
    maxLen = max(len(aBigNum), len(bBigNum))
    aChar = attachZero(aBigNum, maxLen)
    bChar = attachZero(bBigNum, maxLen)

    answer = addBigNum(aChar, bChar)

ParkDongJo

package main

import "fmt"

func Append(slice, data []byte) []byte {
	l := len(slice)
	if l+len(data) > cap(slice) { // 재할당 여부 체크
		// 두배의 크기로 할당
		newSlice := make([]byte, (l+len(data))*2)
		// 내장함수 copy를 사용해 복사

ParkDongJo

package main

import (
  "fmt"
)
type counter int

func (r counter) inc(v int) int {
  return int(r) + v
}