More Problems

• Create a function that checks if an array is a subset of another using a hash set.
• Write a program to find the longest repeating character in a string using hashing.
• Implement a function that finds the unique characters in a string using a hash set.
• Create a program to return the characters that appear in only one of two strings using hashing.
• Given a string, write a function to find all permutations of the characters using hashing.
• Write a program to check if a string can be formed by rearranging another string using hashing.
• Create a function that finds the longest prefix which is also a suffix in a string using a hash table.
• Implement a program to find the number of unique words in a book using a hash map.