Is hashmap get thread safe?
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Now you are given an array of a characters (both ASCII and Kanji) and, an index into the array. The index points to the start of some character. Now you need to write a function to do a backspace (i.e. delete the character before the given index).
Is hashmap faster than arraylist?
What is data structure and its operations?
What happens when arraylist is full?
How do you sort an array in decreasing order?
What is an externalizable interface?
How does sort function work?
applications of linked lists and mostly used linked list?
Can we store primitives in collections?
Why does hashset use hashmap?
Define degree of the node?
What is mean by selection sort?