Question

you are given on integer N and integer array A as the input where N denotes the length of A.write a program to find the product of every element with its next consecutive integers on the number line and return the sum of these products​

Answer 1

Co‎de: [in Python language]

$\tt import\ numpy\ as\ np\\N\ =\ int(in put("Enter\ the\ number\ of\ elements:\ "))\\print()\\l\ =\ list()$

$\tt for\ i\ in\ range(N):\\{\ \ \ \ \ }nm\ =\ int(in put("Enter\ the\ number:\ "))\\{\ \ \ \ \ }l.append(nm)\\print()$

$\tt A\ =\ np.array(l)\\print(A,\ "is\ the\ given\ array.")\\print()\\prod\_dict\ =\ dict()\\for\ i\ in\ A:\\{\ \ \ \ \ }prod\_dict[i]\ =\ i*(i\ +\ 1)\\print(sum(prod\_dict.values()),\ "is\ the\ required\ out put.")$

Explanation:

To create an array, the $\tt numpy$ library is required. We retrieve the number of elements required, in the variable 'N'. A list is created to store the numbers that are going to be entered. The numbers are retrieved using a $\tt for$ loop and as they're being entered, they're added to the list earlier created for the same using the $\tt append()$ method. The required array, 'A', is created. We then create a dictionary 'prod_dict' to store the product of the elements with their consecutive numbers on the number line. The final sum is printed in an appropriate $\tt print()$ statement.