More Problems

• Write a function to count the number of unique elements in a 2D array using a hash set.
• Given a string, write a program to find all substrings that are palindromes using hashing.
• Create a function that checks if a string contains balanced brackets using a hash map.
• Write a program to determine if two strings are anagrams using a sorted hash map.
• Implement a function to find the maximum length of a prefix substring that occurs more than once using hashing.
• Create a program to find the first character that appears an odd number of times using a hash map.
• Write a function to count the total number of different characters in two strings combined using hashing.
• Given an array of integers, write a program to check if it contains duplicate elements using a hash set.