JavaArray<T> JavaArray<T> 屬性 方法 Clear Contains CopyTo GetEnumerator IndexOf ToArray 明確介面實作 JavaBooleanArray JavaCharArray JavaDoubleArray JavaException JavaInt16Array JavaInt32Array JavaInt64Array JavaInterfaceDefaultMethodAttribute JavaLibraryReferenceAttribute JavaObject JavaObjectArray<T> JavaObj...
JavaInt32Array Constructors Methods Clear CopyFrom CopyTo CreateMarshaledValue GetElements IndexOf JavaInt64Array JavaInterfaceDefaultMethodAttribute JavaLibraryReferenceAttribute JavaObject JavaObjectArray<T> JavaObjectExtensions JavaPeerableExtensions JavaPrimitiveArray<T> JavaSByteArray JavaSingleArray JavaType...
JavaArray<T> JavaBooleanArray JavaCharArray JavaCharArray Constructors Methods Clear CopyFrom CopyTo CreateMarshaledValue GetElements IndexOf JavaDoubleArray JavaException JavaInt16Array JavaInt32Array JavaInt64Array JavaInterfaceDefaultMethodAttribute JavaLibraryReferenceAttribute JavaObject JavaObjectArray<T> ...
importjava.util.ArrayList;publicclassMain{publicstaticvoidmain(String[]args){ArrayList<String>cars=newArrayList<String>();cars.add("Volvo");cars.add("BMW");cars.add("Ford");cars.add("Mazda");System.out.println(cars.indexOf("Ford"));}} ...
JavaPrimitiveArray<T> JavaSByteArray JavaSingleArray JavaSingleArray 建構函式 方法 Clear CopyFrom CopyTo CreateMarshaledValue GetElements IndexOf JavaTypeParametersAttribute JniAddNativeMethodRegistrationAttribute JniArgumentValue JniArrayElements JniBooleanArrayElements JniCharArrayElements JniConstructorSignatureAttr...
Method: GET 1. 2. 3. 4. 5. 6. 7. 8. 9. 优化前后性能对比 C4Context title 优化前后性能对比 Person(user, "用户") System(system, "字节数组查找系统") Container(oldSystem, "旧版 indexOf", "处理能力", "") Container(newSystem, "新版 indexOf", "高效查找", "") ...
因为存在indexOf的方法,所以自定义方法写成indexof,方便对比。 对于Array.indexof()方法的实现,主要考察的就是原型继承的知识。 通过Array.prototype.indexof = function(){}就可以给Array添加一个方法,实际工作中不推荐这样做。 剩下的就是数组元素匹配的问题,就不多说了,虽然不难,但是做的过程中也遇到了不大不...
The lastIndexOf() method returns the position of the last occurrence of a value in the list. If the item is not found in the list then it returns -1.Syntaxpublic int lastIndexOf(Object item)Parameter ValuesParameterDescription item Required. The item to search for in the list....
5 * combination with {@link Collection#toArray}. The returned list is 6 * serializable and implements {@link RandomAccess}. 7 * 8 * This method also provides a convenient way to create a fixed-size 9 * list initialized to contain several elements: 10 *...
TheindexOf()method returns the first index of occurance of anarrayelement, or-1if it is not found. Example letlanguages = ["Java","JavaScript","Python","JavaScript"]; // get the index of the first occurrence of "JavaScript"letindex = languages.indexOf("JavaScript"); ...