Question

The goal of this homework is to introduce a Ruby environment and to practice basic
programming.

1. Function rand(n+1) returns a random integer between 0 and n. Write a function that
creates an array of 100 random numbers between 0 and 10 [slide 143].

3. Make a function hist(v) that plots a histogram of values stored in array v. For example:
0 **********
1 ********
2 *********
3 ***********
4 *******
5 ************
6 ***********
7 *********
8 *************
9 ***********

10 *********

Answer 1

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Code:

#function to generate array of 100 elements between 0 to 10 values

def generateRandomArray(n)

    return Array.new(100) { rand(n+1) }

end

#print the histogram of values present in array

def hist(v)

   #run the for loop from 0 to 10, print the i and it's occurrence in array v

   for i in 0...11 do

        print (i)

        print(" ")

        #print * times i is present in array v

        v.count(i).times do

            print "*"

        end

        puts("") #print new line

        i +=1

    end

end

#main driver function

v = generateRandomArray(10)

hist(v)

===Output and screen shot of the code===

main.rb 1 #function to generate array of 100 elements between e to 10 values 2- def generateRandomArray (n) return Array.new(100) { rand (n+1) } 4 end 6 #print the histogram of values present in array 7- def hist(v) #run the for Loop from 0 to 10, print the i and it's occurence in array v for i in 0...11 do print (i) print(" ") #print * times i is present in array v v.count (i).times do print "*" 9- 10 11 12 13 14 15 end puts("") #print new Line i +=1 16 17 18 end 19 end 20 21 #main driver function v = generateRandomArray(10) 23 hist(v) 22 input 10 ** -..Program finished with exit code 0 Press ENTER to exit console.