{"blocks": [{"key": "4ecdad37", "text": "Question", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "43a37b35", "text": "Implement, in Java and without IDE assistance, an Iterator interface and two concrete iterator classes that satisfy three given sub-problems, writing runnable code and tests entirely from scratch.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}], "entityMap": {}}