More Problems

• Create a function that checks if a string contains valid parentheses using a hash map.
• Given a string, write a function to count the occurrences of each vowel using a hash map.
• Write a program to determine if two strings can be formed from the same characters using hashing.
• Create a function that returns the character with the minimum frequency in a string using a hash table.
• Implement a function to find the longest substring of consecutive characters in a string using hashing.
• Write a program to count the number of unique words in a sentence using hashing.
• Create a function that checks if an array is a subset of another using hashing.
• Given a string, write a function to find the longest substring that contains at most two distinct characters using hashing.