More Problems

• Write a function to determine the number of valid Sudoku rows, columns, and boxes using a hash table.
• Given two strings, write a function to find the longest common subsequence using a hash map.
• Implement a program to count the number of pairs of integers whose sum is equal to a specific target using hashing.
• Create a function to find the longest substring without repeating characters using a hash set.
• Write a program to find the number of occurrences of each character in a string using a hash map.
• Given a list of integers, find the count of elements that are greater than or equal to a specific number using hashing.
• Write a function to determine if a string is a valid anagram using hashing.
• Implement a program to count the frequency of elements in an array of strings using a hash map.