oefening 2 more loops

more_loops/oefening2.js

@@ -0,0 +1,20 @@
+function isDoubloon(s) {
+	let arr = [];
+	for (let i = 0; i < s.length; i++) {
+		let index = s.charCodeAt(i);
+		if (arr[index] === undefined) {
+			arr[index] = 1
+		} else {
+			arr[index]++;
+		}
+	}
+
+
+	for (let i = 0; i < arr.length; i++) {
+		if (arr[i] !== undefined && arr[i] !== 2) {
+			return false;
+		}
+	}
+	return true;
+}
+console.log(isDoubloon('baba'));