hokage123
hokage123
PutIfAbsent Or OnlyIfabsent serve what purpose If Put() method work for the key if it is not present Otherwise it overrides the value of key.
Arrays is a class used for array object basic operation sort, min, max. Collections is a class used for collection framework objects basic operation but these collection object are basically...
数组是用于数组对象基本操作排序（最小值，最大值）的类。 集合是用于集合框架对象基本操作的类，但是这些集合对象基本上是包装器类对象的容器，它们不能包含原始对象。
Both use quick sort implementation.
After the Collection framework Arrays.sort() have not much changed but there should be some change in Collections. Sort() because of ArrayList means generic class concept
> > Both use quick sort implementation. > > I will tell you responsibly that you don't use quick sort for object types at all, and you don't just use...
> > > > Both use quick sort implementation. > > > > > > > > > I will tell you responsibly that you don't use quick sort for...
But For using this or any sort on any wrapper class container it is needed to implement comparable interface and override compare to() or use Comparator interface. For eg Integer,...
> 'cause merge sort is suitable sort but quick sort not. In some reasons, you might want to sort twice but use different fields, and keep the first order, then...
> > But For using this or any sort on any wrapper class container it is needed to implement comparable interface and override compare to() or use Comparator interface. For...