Question

Why are data manipulation, efficiency, and memory useful in programming? Provide specific examples of data manipulation using arrays.

Answer 1

Data manipulation is the process of changing data to make it easier to read or be more organized. Computers may also use data manipulation to display information to users in a more meaningful way, based on code in a software program, web page, or data formatting defined by a user.

Efficiency and memory are both crucial when a simple sorting or searching algorithm is used by millions of users/machines at the same time. If suppose out of two algorithms, one takes up an MB of extra space so when a million machines run it simultaneously, you would require a million MB more storage than the other algorithm. And, if the algorithm is not efficient, it would end up running for many days.

Basic array data manipulations are given as:

int a[] = {1, 2, 3, 4, 5};

a[3] = 56;