More Problems

• Implement a function to count the occurrences of a specific word in a sentence 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 is a valid email address using hashing.
• Given an array, write a program to count the total number of even numbers using a hash set.
• Implement a function to find the first unique character in a string using a hash map.
• Create a program to check if two strings are isomorphic using hashing.
• Write a function to find the longest substring that contains only digits using hashing.
• Given a string, write a program to count the total number of unique letters using hashing.