More Problems

• Create a program to count the frequency of letters in a string using a hash table.
• Write a function to find the maximum length of a substring that contains at most one repeating character using hashing.
• Create a function to determine if two arrays have any elements in common using hashing.
• Write a program to find the first character that appears twice in a string using a hash map.
• Given a string, write a function to check if it is a valid identifier using hashing.
• Implement a function to find the total number of vowels and consonants in a string using hashing.
• Create a program to find the longest sequence of unique numbers in an array using hashing.
• Write a function to count the total number of consonants in a string using a hash map.