working files

hw/hw3/starter-code/src/java/simpledb/DbException.java

hw/hw3/starter-code/src/java/simpledb/DbFile.java

hw/hw3/starter-code/src/java/simpledb/DbFileIterator.java

hw/hw3/starter-code/src/java/simpledb/DbIterator.java

hw/hw3/starter-code/src/java/simpledb/Debug.java

hw/hw3/starter-code/src/java/simpledb/Delete.java

hw/hw3/starter-code/src/java/simpledb/Field.java

hw/hw3/starter-code/src/java/simpledb/Filter.java

hw/hw3/starter-code/src/java/simpledb/HeapFile.java

hw/hw3/starter-code/src/java/simpledb/HeapFileEncoder.java

hw/hw3/starter-code/src/java/simpledb/HeapPage.java

hw/hw3/starter-code/src/java/simpledb/HeapPageId.java

hw/hw3/starter-code/src/java/simpledb/Insert.java

hw/hw3/starter-code/src/java/simpledb/IntField.java

hw/hw3/starter-code/src/java/simpledb/IntegerAggregator.java

hw/hw3/starter-code/src/java/simpledb/Join.java

hw/hw3/starter-code/src/java/simpledb/JoinOptimizer.java

hw/hw3/starter-code/src/java/simpledb/JoinPredicate.java

hw/hw3/starter-code/src/java/simpledb/LogFile.java

hw/hw3/starter-code/src/java/simpledb/LogicalFilterNode.java