More Problems

• Write a program to find the longest palindrome that can be formed from a string using a hash map.
• Implement a function to check if a sequence of numbers can form an arithmetic progression using hashing.
• Create a program to find the shortest substring that contains all characters of another string using hashing.
• Given an array of integers, find the number of subarrays whose sum is a perfect square using hashing.
• Write a function to determine the number of valid parentheses combinations that can be formed using a hash map.
• Implement a program to find the largest range of consecutive numbers in an unsorted array using hashing.
• Create a function to find the maximum size of a set of distinct elements in a sliding window using hashing.
• Given a string, write a program to determine the number of unique words using a hash map to track frequencies.