在给定完整数组的情况下，如何识别不完整数组中缺少的元素？

def findMissingElements(complete_array, incomplete_array):
    hash_table = {}
    
    # 遍历完整数组，将元素存储在哈希表中
    for num in complete_array:
        hash_table[num] = 0
    
    # 遍历不完整数组，对哈希表中对应的键的值加1
    for num in incomplete_array:
        if num in hash_table:
            hash_table[num] += 1
    
    # 找到值为0的键，即为不完整数组中缺少的元素
    missing_elements = []
    for key, value in hash_table.items():
        if value == 0:
            missing_elements.append(key)
    
    return missing_elements

# 示例用法
complete_array = [1, 2, 3, 4, 5]
incomplete_array = [1, 2, 4]
missing_elements = findMissingElements(complete_array, incomplete_array)
print("缺少的元素：", missing_elements)