Today I learned from hackerearth and geeksforgeeks for the material. Hashing Hashing is a technique used to identify a specific object from a group of similar objects. Assume that you have an object and you want to assign a key to it to make searching easy. To store the key/value pair, you can use a simple array like a data structure where keys (integers) can be used directly as an index to store values. However, in cases where the keys are large and cannot be used directly as an index, you should use hashing. In hashing, large keys are converted into small keys by using hash functions. The values are then stored in a data structure called a hash table. Hashing is implemented in two steps An element is converted into an integer by using a hash function. This element can be used as an index to store the original element, which falls into the hash table. The element is stored in the hash table where it can be quickly retrieved using a hashed key. A ...