initial

app.js

@@ -38,9 +38,22 @@ function removeOverlaps(interval) {
 }
 
 function andOperator(interval1, interval2) {
+  var result = [];
+
   var i = 0;
   var j = 0;
   while(i < interval1.length && j < interval2.length) {
+    var start1 = interval1[i][0];
+    var end1 = interval1[i][1];
+    var start2 = interval2[j][0];
+    var end2 = interval2[j][1];
+    //detect overlap
+    if(end2 < start1)
+      j++;
+    else if(end1 < start2)
+      i++;
+
+
 
   }
 }