What is a permuted index?

Question

I am reading Accelerated C++. I don\'t understand Exercise 5-1:

Design and implement a program to produce a permuted index from the following input. A per

Answer 1

Permuted index is an alphabetic list of index surrounded by its context. In the output, observe the bold words. They are alphabetically sorted and are surrounded by its context. This makes it easy for us to search a word and directly infer its usage from the surrounding context i.e. words in your case.

The quick brown fox

jumped over the fence

The quick brown fox

jumped over the fence

jumped over the fence

The quick brown fox

jumped over the fence

The quick brown fox