check String包含HashTable Value

Question

1=[Fletcher Christian, No, Visualisation of Egocentric Networks, Exploring the Irish Political Landscape on Twitter, Twitter Network Analysis, A Web-Based Server Energy Model Generator, Recommending Movies Using Curated IMDb Lists, Travel Planner for Commuters, Analysis of urban street networks - constructing a dual representation, Biography Reading Media Assistant]

我有hash-table喜欢上面。我想知道 Fletcher Christian 是否包含在Hash-Table值

中

这里的值是一个向量

Answer 1

只需查看所有值并检查：

static boolean contains (Hashtable <Integer, Vector <String>> map, String value){
    for (Vector<String> values : map.values()){
        if (values.contains(value))
            return true;
    }
    return false;
}

在Java 8中，您可以使用单行执行此操作：

static boolean contains (Hashtable <Integer, Vector<String>> map, String value){
    return map.values().stream().anyMatch(list -> list.contains(value));
}