Problem: Compare the efficiency of using sequential search on an ordered table of size n and an unordered table of the same size for the key key:
- If no record with the key key is present
- If one record with the key key is present and only one is sought.
- If more than one record with the key key is present and it is desired to find only the first
- If more than one record with the key key is present and it is desired to find them all.