More Problems

• Create a program to find the longest substring with exactly k distinct characters using hashing.
• Implement a function to check if a list of strings contains any duplicates using hashing.
• Write a program to find the number of palindromic substrings in a given string using hashing.
• Given a string, write a function to find the longest substring that is a permutation of another substring using hashing.
• Create a function to determine if a list contains two numbers whose product is equal to a specific target using hashing.
• Write a program to find the first non-repeating character in a string using a hash map.
• Implement a function to check if a string is a valid bracket sequence using a hash map.
• Create a program to count the total number of unique letters in a paragraph using hashing.