More Problems

• Write a program to find the first non-repeating character in a string using a hash map.
• Implement a function to check if a string is a valid bracket sequence using a hash map.
• Create a program to count the total number of unique letters in a paragraph using hashing.
• Write a function to find the first unique integer in an array using a hash map.
• Given two strings, implement a function to determine if they are anagrams using a hash table.
• Create a program that checks if a string can be rearranged to form another string using hashing.
• Write a function to find the longest substring that contains at least k distinct characters using hashing.
• Implement a program to find the count of pairs in an array whose difference equals a given number using hashing.