More Problems

• Given a string, write a function to check if it contains all unique characters using a hash set.
• Implement a function that returns the longest substring without repeating characters using hashing.
• Write a program to find the intersection of two arrays using a hash map.
• Create a function that checks if a given string is a palindrome using a hash map.
• Write a program to group anagrams from a list of strings using a hash table.
• Given a list of integers, find the maximum element using a hash map to track the counts.
• Implement a function to find the number of times a given integer appears in an array using hashing.
• Create a program that counts the vowels in a given string using a hash table.