// Check if two strings are isomorphic

function isIsomorphic(stringOne, stringTwo) {
	
	// check if strings are of the same length
	if (stringOne.length !== stringTwo.length) {
		return false;
	}

}

@@ -124,16 +124,47 @@
 e length
+ (if not, cannot be isomorphic)
 %0A%09if (st
@@ -222,10 +222,323 @@
 se;%0A%09%7D%0A%0A
-%7D
+%09var letterMap = %7B%7D;%0A%0A%09for (i = 0; i %3C stringOne.length; i++) %7B%0A%09%09var letterA = stringOne%5Bi%5D,%0A%09%09%09letterB = stringTwo%5Bi%5D;%0A%0A%09%09// if the letter does not exist, create a map and map it to the value of the second letter%0A%09%09if (letterMap%5BletterA%5D === undefined) %7B%0A%09%09%09letterMap%5BletterA%5D = letterB;%0A%09%09%7D%0A%09%7D%0A%0A%0A%7D%0A%0A%0A%0A%0A%0A%0A%0A%0A%0A%0A%0A%0A%0A
 %0A

Create loop and set first condition: if letter does not exist, create map and map it to value of second letter