More Problems

• Write a function to find the longest substring with at most k distinct characters using hashing.
• Given an array, write a program to count the number of unique triplets that sum to zero using hashing.
• Implement a function to check if a string is a valid email address using hashing.
• Create a program to find the total number of unique characters in a string using a hash map.
• Write a function to determine if two arrays contain the same elements using hashing.
• Given a string, write a program to count the occurrences of a specific character using a hash map.
• Implement a function to find the maximum frequency of any digit in a number using a hash map.
• Create a program to check if a string can be transformed into another string using hashing.