Answer:
Alternatively we produce a complex (hash) value for key which mean that "to obtain a numerical value for every single string" that we are looking for. Then compare that values along the range of list, that turns out be numerical values so that comparison becomes faster.
Step-by-step explanation:
Every individual key is a big character so to compare every keys, it is required to conduct a quite time consuming string reference procedure at every node. Alternatively we produce a complex (hash) value for key which mean that "to obtain a numerical value for every single string" that we are looking for. Then compare that values along the range of list, that turns out be numerical values so that comparison becomes faster.