1. Isomap.m used in Part-A (1). and Part-B (1). are same. It is present in 1A.zip.
2. Isomap.m used in Part-B (2). and Part-B (4). are same. It is present in 2B.zip.
3. L2_distance.m and loadDigits.m are same in all parts which is there in 1A.zip.
4. tangent_d.m and td.c are same in all parts which is there in 2A.zip.
5. loadImageData.m is same in all parts which is there in 1B.zip.