[LeetCode/릿코드] 66. Plus One

문제

 

 

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풀이

 

 

 

import java.math.BigInteger;
import java.util.Arrays;
class Solution {
    public int[] plusOne(int[] digits) {
      String num = "";
        for(int i=0; i<digits.length; i++) {
            num += digits[i];
        }
        BigInteger big = new BigInteger(num);
        BigInteger plus = big.add(BigInteger.ONE);
        
        String str = plus.toString();
        String[] strArr = str.split("");
        
        int[] answer = Arrays.stream(strArr)
                .mapToInt(Integer::parseInt)
                .toArray();
        return answer;
    }
}