More Problems

• Create a function to find the first unique character in a string using a hash map.
• Write a function to count the occurrences of each character in a string using a hash map.
• Given a string, implement a function to find the longest substring that can be formed by rearranging characters using hashing.
• Create a program to find the total number of unique words in a paragraph using hashing.
• Write a function to check if two strings can be transformed into one another with a single character change using hashing.
• Implement a program to find the longest substring that contains all distinct characters using hashing.
• Create a function to determine the number of valid words that can be formed from a list of characters using a hash map.
• Given two arrays, write a program to check if they are permutations of each other using hashing.