Working of the hash function in C++ with examples The standard library of C++ which provides a class called hash class which can be constructed without passing any arguments, so in general, a hash function is used for hashing, which will map key to some values which forms a hash table a data structure which this function will compute an index into an array. And if the hash function returns a unique hash number, then this hash function is called a universal hash function. When this function is called, it will generate an address for each key which is given in the hash function. In C++, the hash is a function that is used for creating a hash table.
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