What is the boundary folding method?

Boundary folding method is basically used in the java algorithm and in the hash table. In the hash function, the left and the right value are basically folded in the fixed boundary between the given center values by using the boundary folding methods.

There are basically two types of folding method in the hashing that are:

Folding shift Folding boundary

In the folding boundary method the outside value are get reversed and the alternate values are get flipped at the boundary folding method.