More Problems

• Create a program to find the count of characters that appear more than once in a string using a hash map.
• Write a function to find the maximum sum of non-adjacent elements in an array using hashing.
• Given two strings, implement a function to check if they are equal when case is ignored using hashing.
• Create a program to find the length of the longest prefix which is also a suffix in a string using hashing.
• Write a function to count the number of distinct pairs that sum to a target value using a hash map.
• Implement a function to find the longest substring of unique characters in a string using hashing.
• Create a program to check if a string is a valid palindrome using hashing.
• Write a function to find the number of unique words in a paragraph using hashing.