reverse-a-string.js

/**********************
	Reverse a String

	Target:- We'll write a function which takes a string as it's parameter and return it's reverse.
	
	// we'll go through the steps:-

	1. Convert the string into array [Because Array has a method to reverse item]
	2. Reverse the Array Item
	3. convert Array into String 
***********************/


const reverseString = (string) => {
	
	return string.split('').reverse().join('');
};

const result = reverseString("Bangladesh");
console.log(result);  // Should return "hsedalgnaB"


// Another Way
// 1. Create a empty string variable
// 2. Loop through the string from the oposide using (--) and store them to our Created Empty sting variable;

function reverseString(string) {
	
	let stringContainer = '';

	for(let i =  string.length-1; i>=0; i--) {
		stringContainer += string[i];
	}
	
	return stringContainer;
}

/********************
	Another Way [Build-in String Method]

1. Loop through the string
2. use substr(1) + charAt(0) with each item | It returns a Reverse String

5th call will return reverseString("") + "o" = "o"
4th call will return reverseString("o") + "l" = "o" + "l"
3rd call will return reverseString("lo") + "l" = "o" + "l" + "l"
2nd call will return reverserString("llo") + "e" = "o" + "l" + "l" + "e"
1st call will return reverserString("ello") + "h" = "o" + "l" + "l" + "e" + "h"

**********************/
function reverseString(str) {
  
  for(let i = 0; i <str.length; i++) {
    return str.substr(1) + str.charAt(0)
  }

};

reverseString("Shaon")