What improvement has java-8 made that performance of HashMap.get() function call is fast by 20% in Java-8.
It is almost impossible to design a generic hash system without collision. In case of collision, it need to be handled. There are multiple ways of handling collision. Separate chaining is one of such techniques.
Let us design a data structure in which we want to store numbers (taking it for simplicity, else it can be anything). We want to minimise the time taken by the following three operations:
- Insertion, time taken to insert a new value.
- Deletion, time taken to remove an existing value.
- Searching, time taken to search for a value in the data structure and see if it is present or not.
Which data structure do you suggest ?
An anagram is a word play. If letters of a word can be arranged to form another word, the two words are called anagrams. e.g MARY & ARMY are anagrams because both of them are formed of characters A, M, R and Y.