More Problems

• Implement a program to find the first missing number in an unsorted array using a hash set.
• Create a function to find the maximum length of a substring with at most two distinct characters using hashing.
• Given a string, write a program to find the longest substring that contains all characters of another string using hashing.
• Write a function to find the number of valid words that can be formed from a list of characters using a hash map.
• Implement a program to check if a string can be rearranged to form a palindrome using a hash map.
• Create a function to find the total number of unique substrings in a given string using hashing.
• Write a function to count the number of pairs of elements that sum up to a given value using hashing.
• Given two strings, implement a function to check if they can be made equal with a single swap using hashing.