More Problems

• Given an array of integers, write a program to check if it contains duplicate elements using a hash set.
• Implement a function to find the maximum frequency of any character in a string using a hash map.
• Create a program to find the longest substring that contains the same character using hashing.
• Write a function to check if two strings are anagrams 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 first character that appears three times in a string using a hash map.
• Create a program to check if a string is a valid email address using hashing.
• Write a function to find the total number of unique words in a paragraph using hashing.