More Problems

• Implement a function to find the longest substring of unique characters in a string using a hash set.
• Write a program to find the number of valid email addresses in a list using hashing.
• Create a function that checks if an array can be partitioned into two subsets with equal sums using hashing.
• Given a string, write a function to find the longest substring with all distinct vowels using hashing.
• Write a program to find the minimum character swaps required to make two strings anagrams using hashing.
• Create a function that returns the indices of all occurrences of a character in a string using a hash map.
• Implement a function to determine if two strings are rotations of each other using hashing.
• Write a program to find the number of times a word appears in a text using hashing.