emonidi · May 10, 2015 08:13 · May 10, 2015
diff --git a/Symple Strings b/Symple Strings
@@ -0,0 +1,44 @@
+/*
+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. 
+*/
+
+var correctString = '+d+=3=+s+';
+var incorrectString = '+d=+3=2+'
+
+function SimpleSymbols(str){
+
+	function symbolPositions(){
+		return str.match(/[\d,a-z]/ig);		
+	}
+
+	function isNumber(symbol){
+		return parseInt(symbol);
+	}
+
+	function checkSurroundings(symbol,surroundingSign){
+		return str[str.indexOf(symbol) - 1] === surroundingSign && str[str.indexOf(symbol) + 1] === surroundingSign;
+	}
+
+	var positions = symbolPositions();
+	for(var i = 0; i < positions.length; i++){
+
+		if(isNumber(positions[i])){
+			if(!checkSurroundings(positions[i],'=')){
+				return false;
+			}
+		}else{
+			if(!checkSurroundings(positions[i],'+')){
+				return false;
+			}
+		}
+	}
+
+	return true;
+}
+
+
+console.log(SimpleSymbols(correctString));