DAY 1

1.a. Write a function which count the number of occurrence of words in a paragraph or a sentence.The function countWords takes a paragraph and two words as parameters. It compare which word is most frequently occurred in the paragraph.

const paragraph = 'I love teaching. If you do not love teaching what else can you love. I love JavaScript if you do not love something which can give life to your application what else can you love.';
console.log(countWords(paragraph,'love', 'you'));
The word love more frequently occurred than you.

1.b. Write a function called cleanText. The function takes raw text as a parameter and returns the clean text.

const sentence = `%I $am@% a %tea@cher%, &and& I lo%#ve %tea@ching%;. There $is nothing; &as& mo@re rewarding as educa@ting &and& @emp%o@wering peo@ple. ;I found tea@ching m%o@re interesting tha@n any other %jo@bs. %Do@es thi%s mo@tivate yo@u to be a tea@cher!?`;
    console.log(cleanText(sentence));
`I am a teacher and I love teaching. There is nothing as more rewarding as educating and empowering people. I found teaching more interesting than any other jobs. Does this motivate you to be a teacher?`

1.c. After cleaning the text in the sentence from question number b you will get the following text. Count the number of words in this text. Don't include words with only one letter.

const sentence =  `I am a teacher and I love teaching. There is nothing as more rewarding as educating and empowering people. I found teaching more interesting than any other jobs. Does this motivate you to be a teacher?`
console.log(countWords(sentence));
31

1.d. How many words were used to construct this sentence. Now, don't exclude one letter words.

console.log(varietyOfWords(sentence))
28

2.a. Looping a triangle: Write a loop that makes seven calls to console.log to output the following triangle:

#
##
###
####
#####
######
#######

It may be useful to know that you can find the length of a string by writing .length after it.

2.b. Write a function which returns array of seven random numbers in a range of 0-9. All the numbers must be unique

sevenRandomNumbers()
[1,4,5,7,9,8,0]

2c. Reversing an array: Arrays have a reverse method which changes the array by inverting the order in which its elements appear. For this exercise, write a function, reverseArray. The reverseArray, takes an array as argument and produces a new array that has the same elements in the inverse order. Without reverse method.

console.log(reverseArray(["A", "B", "C"]));
["C", "B", "A"]

2.d. Write a function which check if items of an array are unique?

const arrOne = [1, 4, 6, 2, 1];
console.log(checkUniqueness(arrOne));
false
const arrTwo = [1, 4, 6, 2, 3]
console.log(checkUniqueness(arrTwo));
true