More Problems

• Implement a function to count the occurrences of each digit in a number using hashing.
• Create a program to find the maximum frequency of any character in a string using a hash map.
• Write a function to determine if two strings can be transformed into a palindrome using hashing.
• Given a string, write a program to check if it is a valid identifier using hashing.
• Implement a function to find the first character that appears twice in a string using a hash map.
• Create a program to count the total number of unique characters in a string using hashing.
• Write a function to find the longest substring with at least one repeating character using hashing.
• Given an array of integers, write a program to count the total number of even numbers using a hash set.