合並兩個字符串數組到元素對列表

Question

我有兩個大小不同的數組：

added_items[1, 2, 3]
deleted_items[3, 4]

我的目標是將這些數組轉換為以下對的列表：

list {
    added: 1, deleted 3
    added: 2, deleted 4
    added: 3, deleted: null
}

如果您分享最簡單的方法來使用guava，apache庫等來實現此目的，以避免彼此之間過多的自定義邏輯，那將是很好的。

我真的很感謝任何答案。

Answer 1

    int max = added_items.length > deleted_items.length ? added_items.length : deleted_items.length;
    for (int i = 0; i < max; i++) {
        Integer added = (i < added_items.length) ? added_items[i] : null;
        Integer deleted = (i < deleted_items.length) ? deleted_items[i] : null;
        pairs.add(new Pair(added, deleted));
    }

Answer 2

String[] MERGE = ArrayUtils.addAll(added_items, deleted_items);

或嘗試：

import static com.google.common.collect.Iterables.concat;
import static java.util.Arrays.asList;

concat(asList(added_items), asList(deleted_items))