CodeSprout 官方2026/10/04 00:19

官方解答 · 置頂Java

官方解答｜索引讀取復原

CodeSprout 官方解答 · 題意分析、解題步驟與完整參考程式

import java.util.*;

public class Solution {
    private static int aggregate(List<Integer> values) {
        int answer = 0;
        for (int x : values) answer += x;
        return answer;
    }

    public static List<Integer> solve(int[] nums, String[] texts) {
        List<Integer> result = new ArrayList<>();
        int formatErrors=0, indexErrors=0;
        for (String text : texts) {
            int index=0;
            try {
                index = Integer.parseInt(text.trim(),10);
                int x = nums[index];
                result.add(x);
            } catch (NumberFormatException error) {
                formatErrors++;
                result.add(-1);
            } catch (ArrayIndexOutOfBoundsException error) {
                indexErrors++;
                if (nums.length == 0) result.add(0);
                else { int x = nums[index < 0 ? 0 : nums.length-1]; result.add(x); }
            }
        }
        return Arrays.asList(aggregate(result),formatErrors,indexErrors);
    }
}