70 Reverse a String

//Create a function that reverses a string

function reverse(str) {

// check input for string

if (!str || str.length < 2 || typeof str !== 'string') {

return 'not a string';

}

const backwards = [];

const totalItems = str.length - 1; // how many items we have in the string

for(let i = totalItems; i >= 0; i--) { // we are going to loop through the syting till i = 0. i-- : we are going from back to front, we are decrementing

backwards.push(str[i]); // pushing each item of a given string into our array

}

const reversedString = backwards.join('');

console.log(reversedString);

return(reversedString);

}

function reverse2(str) {

const reversedString = str.split('').reverse().join('');

console.log(reversedString);

return reversedString;

}

const reverse3 = str => str.split('').reverse().join('');

const reverse4 = str => [...str].reverse().join('');

reverse('Hello world!');

reverse2('Hello world2!');

reverse3('Hello world3!');