CodeSprout 官方2026/10/04 00:19

官方解答 · 置頂Java

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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 abstract class ReadingBase {
        protected final int raw;
        ReadingBase(int raw) { this.raw = raw; }
        abstract int value();
        abstract boolean enabled();
    }
    private static class Reading extends ReadingBase {
        Reading(int x) { super(x); }
        int value() { return -raw; }
        boolean enabled() { return raw % 2 == 0; }
    }

    public static int solve(int[] nums) {
        List<Integer> result = new ArrayList<>();
        int answer = 0;
        for (int x : nums) {
            ReadingBase reading = new Reading(x);
            if (reading.enabled()) answer += reading.value();
        }
        return answer;
    }
}