Java比较三个字符串数组并使用Binarysearch

Arrays.sort(array1);
Arrays.sort(array2);
Arrays.sort(array3);

ArrayList<String> mergedArray = new ArrayList<>();
mergedArray.addAll(Arrays.asList(array1));
mergedArray.addAll(Arrays.asList(array2));
mergedArray.addAll(Arrays.asList(array3));

String[] mergedArray = mergedList.toArray(new String[mergedList.size()]);

Arrays.sort(mergedArray);

int index = Arrays.binarySearch(mergedArray, targetString);

if (index >= 0) {
    System.out.println("目标字符串存在于合并后的数组中，索引位置为：" + index);
} else {
    System.out.println("目标字符串不存在于合并后的数组中");
}