/***************************************************************************************

* *

* CODERBYTE BEGINNER CHALLENGE *

* *

* Simple Symbols *

* Using the JavaScript language, have the function SimpleSymbols(str) take the str *

* parameter being passed and determine if it is an acceptable sequence by either *

* returning the string true or false. The str parameter will be composed of + and = *

* symbols with several letters between them (ie. ++d+===+c++==a) and for the string *

* to be true each letter must be surrounded by a + symbol. So the string to the left *

* would be false. The string will not be empty and will have at least one letter. * *

* *

* SOLUTION *

* When reading the directions for this challenge you have to be aware of the adage *

* "Attention to detail, all the time!" The instructions immediately tell you that *

* you will have two outliers that you have to account for in your solution. They are *

* the first and last characters. If these are letters then you have to return false *

* because there cannot be a + before or after these letters.

* *

* Steps for solution *

* 1) Convert string to an Array. *

* 2) Loop thru each letter in array *

* 3) If first character or last character is letter a-z then return false (outlier)*

* 4) If charcter is string then check if letter before and after is + and if not *

* then return false *

* 5) If looped through whole array and everything matches then return true *

* *

***************************************************************************************/

function SimpleSymbols(str) {

var arr = str.toLowerCase().split("");

for (var i = 0; i < arr.length; i++) {

if (arr[i] >= "a" && arr[i] <= "z") {

if (i === 0 || i === arr.length) {

return false;

}

if (arr[i-1] !== "+" || arr[i+1] !== "+") {

return false;

}

}

}

return true;

}