More Problems

• Create a function that checks if a string is a valid identifier using hashing.
• Given a string, write a function to find the longest substring that is an anagram of another substring using hashing.
• Write a program to find the total number of characters in a string excluding digits using a hash set.
• Create a function that returns the unique elements in an array using hashing.
• Implement a function to count the number of trailing zeros in a factorial of a number using hashing.
• Write a program to find the first character that appears three times in a string using hashing.
• Create a function that checks if a string can be converted into a palindrome by removing at most one character using hashing.
• Given a string, write a function to find the longest substring of numbers using hashing.