More Problems

• Create a program to check if two strings can be rearranged to form a valid palindrome using hashing.
• Write a function to find the first unique character in a string using a hash map.
• Given an array, write a program to count the occurrences of each digit in a number using hashing.
• Implement a function to find the total number of vowels and consonants in a string using hashing.
• Create a program to check if a string is a valid email address using hashing.
• Write a function to find the longest substring that is a palindrome using hashing.
• Given two strings, implement a function to check if they are anagrams using hashing.
• Create a program to find the maximum frequency of any character in a string using a hash map.