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使用instanceof分类 #211

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使用instanceof分类 #211

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22 changes: 17 additions & 5 deletions src/main/java/com/github/hcsp/inheritance/Classifier.java
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Original file line number Diff line number Diff line change
Expand Up @@ -19,17 +19,29 @@ public static void main(String[] args) {
}

/**
* 给定一个包含任意对象的列表，将其按照以下方式分类： 如果对象是Number类型，将其放入numberList； 如果对象是String类型，将其放入stringList；
* 给定一个包含任意对象的列表，将其按照以下方式分类：
* 如果对象是Number类型，将其放入numberList；
* 如果对象是String类型，将其放入stringList；
* 否则，将其放入otherList。
*
* @param list 给定的包含任意对象的列表
* @param list 给定的包含任意对象的列表
* @param numberList 用于接收所有Number对象的列表
* @param stringList 用于接收所有String对象的列表
* @param otherList 用于接收其余所有类型对象的列表
* @param otherList 用于接收其余所有类型对象的列表
*/
public static void classify(
List<Object> list,
List<Number> numberList,
List<String> stringList,
List<Object> otherList) {}
}
List<Object> otherList) {
for (Object object : list) {
if (object instanceof Number) {
numberList.add((Number) object);
} else if (object instanceof String) {
stringList.add((String) object);
} else {
otherList.add(object);
}
}
}
}