More Problems

• Given a string, implement a function to count the total number of unique letters using hashing.
• Create a program that checks if a list contains any pairs of integers that are equal using a hash set.
• Write a function to find the total number of vowels in a string using a hash map.
• Implement a function to find the maximum frequency of any element in a list using a hash map.
• Create a program to check if two strings are isomorphic using a hash map.
• Write a function to find the longest palindrome substring in a given string using hashing.
• Given a string, write a program to find all unique characters using a hash set.
• Implement a function to check if a string is a valid email address using hashing.