Question

Write a function that takes an array A of integers as the input and does the following:

(a) Uses each method to print the square of each element of A, (b) Uses each_slice method to print the

elements while printing 4 elements at a time, (c) Uses select method to find the integers (in A) which are

multiple of 4, (d) Uses map method to build a new array of squares of the elements of A, and (e) Uses inject

method to find the product of all elements of A. To test the function, generate an array A of 51 random

integers between 20 and 100, and pass into the function as a parameter

In ruby language

Answer 1

a)A.each {|array| print (array*array).to_s() +"\n" }

b)A.each_slice(4) {|array| print (array).to_s() +"\n" }

c) A.select {|array| array%4==0 }

d)A.map {|array| array*array }

e)A.inject(1) {|result,element| result*element}

Testing Code:

A = Array.new(51) {rand(20...100)} #generating 51 random number between 20 to 100
A.each {|array| print (array*array).to_s() +"\n" } #using each

A.each_slice(4) {|array| print (array).to_s() +"\n" } #using each slice
A.select {|array| array%4==0 } #using select

A.map {|array| array*array } #using map

A.inject(1) {|result,element| result*element} #using inject

Happy Chegging!