More Problems

• Implement a function to check if a string contains balanced parentheses using a hash map.
• Create a program to find the frequency of each word in a sentence using a hash map.
• Write a function to find the longest substring with exactly one repeating character using hashing.
• Given an array of integers, write a program to determine if it contains duplicate elements using a hash set.
• Implement a function to find the first non-repeating character in a string using a hash map.
• Create a program to check if a string can be rearranged to form a valid palindrome using hashing.
• Write a function to count the occurrences of each digit in a number using hashing.
• Given a list of integers, write a program to find the count of unique elements using a hash set.