More Problems

• Implement a function to count the total number of digits in a string using a hash map.
• Create a program to find the longest substring that is an anagram of another substring using hashing.
• Write a function to check if a string can be rearranged to form a palindrome using hashing.
• Given a string, write a program to find the first unique character in a string using a hash map.
• Implement a function to check if a string can be transformed into a valid number using hashing.
• Create a program to find the longest substring that contains only digits using hashing.
• Write a function to count the occurrences of each letter in a string using a hash map.
• Given a list of integers, write a program to find the count of unique elements using a hash set.