More Problems

• Write a function to find the longest substring that contains at least k distinct characters using hashing.
• Implement a program to find the count of pairs in an array whose difference equals a given number using hashing.
• Create a function to check if a string is a valid phone number format using hashing.
• Write a program to find the common elements in two arrays using a hash map.
• Given a list of integers, write a function to find the minimum difference between any two elements using hashing.
• Implement a function to find the number of valid email addresses in a list using hashing.
• Create a program to count the number of valid words in a sentence using a hash map.
• Write a function to find the longest consecutive sequence of numbers in an array using hashing.