// 1. Count Words of a String

// 1. Using split() Method

{

const count = (s) => s.trim().split(/\s+/).length;

const s = "Hello, this is a simple test";

console.log(count(s));

}

// 2. Using Regular Expressions

{

const count = (s) => (s.match(/\b\w+\b/g) || []).length;

const s = "Hello, this is a simple test.";

console.log(count(s));

}

// 3. Using reduce() Method

{

const count = (s) =>

s

.trim()

.split(/\s+/)

.reduce((count) => count + 1, 0);

const s = "Hello, this is a simple test";

console.log(count(s));

}

// 4. Using a Loop

{

const count = (s) => {

let c = 0;

let inWord = false;

for (const char of s) {

if (/\s/.test(char)) {

inWord = false;

} else if (!inWord) {

inWord = true;

c++;

}

}

return c;

};

const s = "Hello, this is not a simple test";

console.log(count(s));

}

// 5. Using matchAll() Method

{

const count = (s) => [...s.matchAll(/\b\w+\b/g)].length;

const s = "My name is amit";

console.log(count(s));

}

// 6. Using Array.from() and filter() Methods

{

const count = (s) => Array.from(s.split(/\s+/).filter(Boolean)).length;

const s = "Hello i am not amit";

console.log(count(s));

}