ArrayList.Clear Method Reference Definition Namespace: System.Collections Assemblies: netstandard.dll, System.Runtime.dll Source: ArrayList.cs Removes all elements from theArrayList. C#Copy publicvirtualvoidClear(); Implements Clear() Exceptions
Here, we have used theclear()method to remove all the elements oflanguages. ArrayList clear() Vs. removeAll() The ArrayList also provides theremoveAll()method that also remove all elements from the arraylist. For example, importjava.util.ArrayList;classMain{publicstaticvoidmain(String[] args){/...
Add Method BinarySearch Method Clear Method Clone Method Contains Method CopyTo Method GetEnumerator Method IndexOf Method Insert Method Remove Method RemoveAt Method ToArray Method ArrayList Properties 閱讀英文 儲存 新增至集合 新增至計劃 共用方式為 ...
ArrayList.Clear MethodArticle 06/03/2010 In this article Syntax Remarks Version Information See Also Removes all objects from the ArrayList collection.Namespace: System.Collections Assembly: mscorlib (in mscorlib.dll)SyntaxC# Copy public virtual void Clear () ...
numbers.clear(); longelapsed=System.nanoTime()-startTime; System.out.println("Time taken by clear to empty ArrayList of 1M elements (ns): "+elapsed); //ResetArrayListusingremoveAllmethod startTime=System.nanoTime(); integers.removeAll(integers); ...
numbers.clear(); longelapsed=System.nanoTime()-startTime; System.out.println("TimetakenbycleartoemptyArrayListof1Melements(ns):" +elapsed); //ResetArrayListusingremoveAllmethod startTime=System.nanoTime(); integers.removeAll(integers); longtime=System.nanoTime()-startTime; ...
public void clear() { // clear to let GC do its work for (int i = 0; i < size; i++) elementData[i] = null; size = 0; } In removeAll() method, it first checks if the element is present or not using contains() method. If the element is present then it is removed from ...
*/ public void clear() { // 删除此列表中的所有元素。 modCount++; // 修改次数+1 // clear to let GC do its work for (int i = 0; i < size; i++) // 遍历数组将所有元素清空 elementData[i] = null; size = 0; // 元素数量赋0 } 遍历数组将所有元素清空即可。 扩容 上文add方法...
public void clear() { //列表修改次数加一 modCount++; // clear to let GC do its work 清除所有元素,垃圾回收 //通过遍历把所有元素设置为Null for (int i = 0; i < size; i++) elementData[i] = null; size = 0; } 1. 2. 3. ...
7. void clear():clear() 方法用于从数组列表中删除所有元素。 8. void set(int index, Object o):set() 方法用指定的元素替换列表中特定位置的元素。例如,假设我们要将位置 2 的元素 “A” 替换为列表中的元素 “a”,我们将不得不将此方法调用为: ...