8. Insert the following keys one-by-one into an initially empty hash table of size 7. Use the hash function h(x) = x mod 7 Show the result for {10, 1, 18, 15, 26, 11, 19} (a) a separate chaining hash table (do not rehash if the load factor becomes too large). (b) a table with linear probing, i.e. using the probing function f(i) = i. For parts (c) and (d), it is possible that you will not be able to insert some of the keys into the table. If you find such a key, rehash the table into a new table of size 11. You need to modify the hash function h(x) accordingly to adjust for the new table size. You do not have to change g(x) for part (d). Do not rehash earlier for any of the tables (even if the load factor becomes too large). (c) a table with quadratic probing, i.e. using the probing function f(i) = 1² (d) a table that uses double hashing with a secondary hash function, i.e. f(i) = i* g(x), where the secondary hash function is g(x) = 5 - (x mod 5).

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### Hash Table Exercise

**Problem Statement:**

Insert the following keys one-by-one into an initially empty hash table of size 7. Use the hash function h(x) = x mod 7.

Keys to insert: {10, 1, 18, 15, 26, 11, 19}

Show the result for:

**(a) A separate chaining hash table**

- Do not rehash even if the load factor becomes too large.

**(b) A table with linear probing**

- Use the probing function f(i) = i.

---

**Instructions for Parts (c) and (d):**

If you cannot insert some keys, rehash the table into a new table of size 11. Modify the hash function h(x) for the new table size. Do not change g(x) for part (d). Do not rehash earlier for any tables, even if the load factor becomes too large.

**(c) A table with quadratic probing**

- Use the probing function f(i) = i².

**(d) A table that uses double hashing**

- Use a secondary hash function. 
- The probing function is f(i) = i * g(x), where g(x) = 5 - (x mod 5).

---

These exercises explore various collision resolution techniques in hash tables, including separate chaining and open addressing methods like linear probing, quadratic probing, and double hashing.
Transcribed Image Text:### Hash Table Exercise **Problem Statement:** Insert the following keys one-by-one into an initially empty hash table of size 7. Use the hash function h(x) = x mod 7. Keys to insert: {10, 1, 18, 15, 26, 11, 19} Show the result for: **(a) A separate chaining hash table** - Do not rehash even if the load factor becomes too large. **(b) A table with linear probing** - Use the probing function f(i) = i. --- **Instructions for Parts (c) and (d):** If you cannot insert some keys, rehash the table into a new table of size 11. Modify the hash function h(x) for the new table size. Do not change g(x) for part (d). Do not rehash earlier for any tables, even if the load factor becomes too large. **(c) A table with quadratic probing** - Use the probing function f(i) = i². **(d) A table that uses double hashing** - Use a secondary hash function. - The probing function is f(i) = i * g(x), where g(x) = 5 - (x mod 5). --- These exercises explore various collision resolution techniques in hash tables, including separate chaining and open addressing methods like linear probing, quadratic probing, and double hashing.
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