More Problems

• Implement a function to find the maximum product of any two distinct elements in an array using hashing.
• Create a program to check if a string can be transformed into a palindrome using hashing.
• Write a function to count the total number of vowels in a string using a hash map.
• Given a string, write a program to check if it is a valid identifier using hashing.
• Implement a function to find the first character that appears twice in a string using a hash map.
• Create a program to find the total number of unique words in a paragraph using hashing.
• Write a function to find the frequency of elements in a list using a hash map.
• Given an array, write a program to count the number of even numbers using a hash set.